English

BOARD ANSWER PAPER : MARCH 2015  ENGLISH  SECTION  I (Reading Skills, Vocabulary and Grammar) Q.1. (A) A1.

A2.

Read the following passage carefully and complete the activities that follow: (i) He has been able to increase the areas of the Pavitra Vana. (ii) He wants to create Brihat Panchavati. (iii) Plans are afoot to create a Saptaswara forest. (iv) On celebrations, parents can invest ` 200 and plant a sapling of a tree representing the child’s birth star.

[½] [½] [½] [½]

(i) (ii)

Brihat Panchavati: Forest where Shakuntala lived or Sita spent her final days. Saptaswara Forest: When a musician performs certain ragas in such a forest, plants react in a manner that would benefit the audience, musician and the whole environment. Eco-park: Trees can be planted as per the birth stars of children and plants will carry names of the children. A garden of Prophet Mohmmed: Has plants mentioned in the Holy Quran. There is the date plant  sacred to Islam  and Mimosops elengi, the latter a highly fragrant variety.

[½] [½]

(iii) (iv)

[½] [½]

A3.

(i) (ii) (iii) (iv)

different increase create found

[½] [½] [½] [½]

A4.

(i) (ii)

to create: His words aim to create a positive vibe in the whole environment. Very few environment specialists are as well-known in India as Reddy.

[1] [1]

A5.

Yes. One person alone can also create awareness. Whenever, a tough task has to be performed, it has to be initiated by someone. There may be one person who initiates the task and the rest can always follow. This way the entire group eventually starts spreading the message further. Hence, initiative is usually taken by one person and one person alone can also create awareness.

(B) B1.

Read the passage and complete the activities given below: (i) Chaucer (ii) Mr. A. N. Patil (iii) independent (iv) freedom to do what he wanted

[½] [½] [½] [½]

B2.

The teacher can (i) inculcate a curiosity to learn in the students. (ii) help the students become independent. (iii) help the students think and act for oneself using their own judgement. (iv) produce better results.

[½] [½] [½] [½]

(i) (ii) (iii)

[½] [½] [½]

B3.

(iv) B4.

(i) (ii)

Spiced: His conversation is always flavoured with a lot of humour. Repository: The library should not merely be a reservoir of books. Inculcate: It is the responsibility of the parents and teachers to give values in the child’s formative years. Incredibly: I have been unbelievably lucky to have at least one such teacher at every stage in my life. There have also been other teachers who have helped me to try to become independent. If it was not for her, I would have not been able to read Shakespeare.

[2]

[½] [1] [1]

1

Board Answer Paper : March 2015 B5. Personalities (i)

Teachers

(ii)

Parents

(iii)

Relatives

(iv)

Friends

Q.2. (A) A1.

A2.

Read the following passage and complete the activities given below: i. True ii. False iii. False iv. True

[½] [½] [½] [½]

[½] [½] [½] [½]

(i)

1. sugary cereals 2. soda

[½] [½]

(ii)

1. Anxiety 2. Depression

[½] [½]

A3.

(i) (ii) (iii) (iv)

anxiety impulse consistent attention

[½] [½] [½] [½]

A4.

(i)

According to study, kids should start the day with fruits, proteins and whole grains and they should avoid sugary cereals because they cause a sugar high. (a) because (b) that

[1] [1]

(ii) A5.

Eating healthy food and getting proper sleep are essential as they help us to succeed in school and later in life. Healthy foods give proteins and other nutrients that are required by the body. New research also shows that if we miss morning breakfast, then our cognitive function is affected. Also if we do not sleep adequately, then it affects our attention, memory, mood and even our impulses. So we must eat healthy, always have morning breakfast of fruit, whole grains and proteins instead of sugary cereals and for snacks, have yogurt, fruits or baked chips, avoid sodas and get proper and adequate amount of sleep at night.

(B) B1.

Read the following passage and do the given activities: (i) The effect of receding forest had made the animals lose their food and shelter and move further on into the foothills. (ii) The number of animals is reduced because hunters have found the area an ideal hunting ground during the last seventy years. (iii) Elephants entered the city because they were in search of their favourite food, i.e. green shoots of bamboo, which became short in supply when the forest was cleared to set up a refugee resettlement camp. (iv) Elephants lived a wary life because they did not know when men would appear again with tractors, bulldozers and dynamite.

B2.

2 2

Influence on your life Teachers have a great influnce in a student’s life. They give immense knowledge to a student. They also inculcate many values in the children such as discipline, dedication, commitment etc. Parents inculcate the moral values in a child. They are responsible for the overall development of the personality of a child. Interaction with relatives leads to the development of the social personality of an individual. Friends influence the mannerisms, habits and the social personality of an individual.

(i) (ii) (iii) (iv)

They waded across the river. They knocked down a factory wall. They pulled down several tin roofs. They held up a train.

[2]

[½] [½] [½] [½] [½] [½] [½] [½]

English B3.

Phrases Make meaningful sentences by selecting any two of the following phrases: (i) The students were asked to vacate the corridor to make way for the Principal. (ii) He told her not to worry and do what she thought was right. In short, he expected her to take charge of the situation. (iii) One can find many temples of local deities on the fringe of Ratnagiri [Any two: ½ mark each]

B4.

(i) (ii)

B5.

Forests are the natural habitat of animals. Hence to protect forests, I will try to create awareness in my city by participating in social camps and speaking about conservation of forests to many people. I will also avoid using products that are made by destroying forests like wood.

has been are denying

[1] [1] [2]

SECTION – II (Poetry) Q.3. (A) A1.

Read the following extract carefully and complete the activities given below: (i) (a) Cook Lunch (b) Wash the dishes in the sink (ii)

Two activities that children avoided doing because of televisions: (a) They don’t climb out the window sill (b) They never fight or kick or punch

[½] [½] [½] [½]

A2.

Excessive watching of T.V. is harmful because it can lead to various health issues like eye irritations, headache, issues related to brain. Also it is waste of time and makes one addicted to it thereby creating ignorance towards rest of the world. It also creates ignorance to other activities like reading, writing, thinking, playing, loitering with friends, enjoying rest of world, etc. Children after continuously watching T.V. tend to just see rather than think about the various stuff happening around them.

[2]

A3.

The figure of speech is Simile because the softness of brain is directly compared to the softness of cheese.

[1]

(B) B1.

Read the following poem and do the given activities: (i) elderly people (ii) greatest true resource (iii) that can show many things (iv) the memories of the sweet and loved ones that were near to them

[½] [½] [½] [½]

B2.

(i) (ii)

Value: importance of the elderly people They: They here, stands for elderly people

[1] [1]

B3.

(i) (ii)

course – resource believe – retrieve

[½] [½] SECTION – III (Rapid Reading)

Q.4. Read the following passage and do the given activities: A1. (i) The doctor’s assistant asked this question to the doctor. (ii) The doctor said this statement to his assistant. A2.

You are improving every second.

Your heart is absolutely sound.

[½] [½]

Don’t worry about the will now. Doctor’s Assurance to Gopal

You are going to live.

[½ mark each]

3

Board Answer Paper : March 2015 A3.

According to me, Dr. Raman was a man of principles. He was loyal to his profession and never liked to give false hopes to his patients. He always did his best to serve patients till their last breath. His behaviour in this case was very professional and he was trying every bit from his end to save the patient’s life. Although he knew it was not possible for the patient to survive, he decided to assure the patient that he would live, as he knew how much faith the patient had in him. At the same time, he instructed his assistant to provide the necessary ailments to reduce the struggle of his patient at the end.

[2]

SECTION  IV (Writing Skills) Q.5. (A) A1.

Letter Writing

[5] Govind Singh A/12, Berry Apts, New Park Street, Pune. 20th June, 2016

Dear Samir, I hope this letter finds you in the pink of health. I was taken aback after reading the piece of article ‘Bad Conditions of Roads During Rains Leads to Mishaps’, in yesterday’s newspaper. Two friends apparently died on the spot after their two wheeler lost control due to the multiple potholes on Ghodbunder Road. It got me worried about your safety while you travel regularly from your home to your school. I am concerned because I know that you travel with your brother on a two wheeler. I would advise that you two take the help of public transport for your school and work respectively as long as monsoon stays. Avoid travelling on your bike as far as possible. Potholes have turned into death holes for the travellers and hence, I want you to be cautious. Please take care of your safety and also the other members of your family while travelling. Give my warm regards to your parents and elder brother. Your loving friend, Govind OR A2. Abhijit Singh B – 54, Satellite Bldg, Kranti Chowk, Aurangabad. 20th July, 2016 To, The Editor, The Times of India, Aurangabad. Subject: Bad conditions of roads Sir, I came across a news article in your esteemed daily a few days back, on road accidents due to potholes because of the rains. The mishaps are leading to accidental deaths, which is very sad. I have taken it up as my responsibility to bring to your notice that a similar situation is being faced by the people of our locality due to the bad condition of the roads. It was yesterday only, when a lady fell down from her scooty on the busy road and was crushed to death by a bus. People travelling on the road were horrified at the accidental death. It was unexpected and an innocent life was lost. The potholes even lead to water logging, resulting in various water borne diseases. Only if the potholes can be covered, lives could get saved and the diseases won’t be so rampant in the neighbourhood. Temporary construction of pavements would help the children to walk safely to their school. Better drainage system would not lead to water logging, thus, reducing half of the problems.

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English I would request you to take this matter further on an urgent basis and prompt some action regarding these life threatening problems. I look forward to your valued cooperation. Thanking you. Yours faithfully, Abhijit Singh (B) B1.

Attempt any one of the following:

[5]

Republic Day Celebration rd

3 February, 2014 The Republic Day programme was held at M. Gandhi Vidyalaya, Bandra, Mumbai on Sunday, 26th January, 2014. The programme was performed at the school ground from 7:00 a.m. to 11:00 a.m. The programme started with a patriotic speech by the English teacher, Ms. Meenal Shetty, who gave us an insight on how the Constitution of our country was formed. The tricolour was hoisted sharp at 7:30 a.m. by our Trustee. He was invited as the chief guest for the occasion. The National Anthem was sung, followed by march past by the students of class tenth. A dance competition was held and the students performed on patriotric songs. Later, the visitors were asked to attend the Environment Exhibition put up by the students of standard VII, VIII and IX. The celebration ended with the distribution of snacks and cold drinks to all. OR B2. Mother : What is your plan for the Republic Day celebration? Me : My friends and I have decided to perform a group dance on a patriotic song after the tricolour is hoisted. Our class teacher has granted us the permission to hold games after the celebration is over. Mother : Anything special that the others have decided to do this year? Me : Oh, yes! After the flag hoisting and a few dance performances, students of class VII and VIII will lead us to an exhibition on art and artefacts. All my classmates are so excited about it. It’ll be something new for us. Mother : Wow! That sounds interesting. Will various cultures be discussed based on the art and artefacts? Me : I am not aware of that, mother. It’ll be helpful if we are provided with some kind of background information about the artwork on display. It will help us learn more about our country and its rich culture. Mother : Exactly, my point! It will benefit the students to enrich their knowledge. Q.6. Attempt any one of the following: (A) A1. Books are the Powerhouse of Knowledge Books play a vital role in shaping our lives. They become a part of us from the time we become a student. They provide us with information and groom us towards a better future. Books are a compilation of facts and fiction, knowledge and pleasure. They are the powerhouse of knowledge and an inspiration to a lot of people in the form of biographies and autobiographies. Books are also a source of motivation for people, who need something to move forward in life. They teach us about the real world and also, create illusionary situations for us to learn from in the form of fiction. Books act like food to our brain as they stimulate our thought process. They also act as our guides at certain points in our lives. One cannot deny the important role that a book plays in a person’s life to mould an individual.

[5]

5

Board Answer Paper : March 2015 OR A2. Name:

Kalpavriksha

Scientific name:

Coconut Palm

Place where grown:

Several states of India

Climate required:

Sandy Soils, High Humidity, Abundant Sunlight and High Rainfall

Uses:

(B) B1.

(a) Liquid

Coconut water provides a Refreshing and Nutritious Drink.

(b) Kernel

High in calories and the White Milk extracted from it is used in many different ways.

(c) Leaves

Braided to make Thatched Roof and Mats. The mid ribs of the leaves are dried and tied together to make Brooms.

(d) Shell

Good sources of Efficient Fuel

Symbolises:

Fertility and Prosperity

Attempt any one of the following:

[5]

Respected Principal Sir, Vice-Principal Madam, My teachers and all my Dear friends. A very good afternoon to all of you. Today, I would like to speak about my journey through the years in this school. I’m at loss of words when it comes to something as emotional as the last day of one’s school life. I have spent my entire childhood in the corridors of this place and the teachers have been like mother figures, always grooming us to become reliable future citizens of India. It has been our second home and today, is the day, when we shall step outside its confines to face the world outside. The thought itself gives rise to mixed feelings. I am sure that most of us here are excited as well as a little scared about the world outside. We need to choose our career paths and then decided upon a course. There won’t be anybody to solve our doubts with particular interest to make us learn. We will have to learn to be independent. It is indeed going to be a vulnerable phase, but a learning experience too in the path of becoming an adult. All the fun would substantially reduce as we will continue to jump degrees. Friends will be dearly missed and all the moments will remain a memory in our minds. The safe environment of the school, the care of the teachers and the other staff members would be one thing that we will always crave for. All of you have taught us to be good human beings and have given your best to make us brave enough to face the future. We can never thank you enough for every bit of your contribution towards grooming us for a better tomorrow. We will miss school and our school life. OR B2. Crackers  Happines or Grief I strongly oppose the conviction that crackers are burst to express happiness. Bursting of crackers may symbolise joy for some, but the noise produced by the crackers is nothing less than a nuisance. First and foremost, it disturbs the older generation and also the people, who prefer peace. Secondly, the view that it illuminates the sky is totally dumb, as it stays for only a few moments. Bursting crackers leads to air pollution as well. The atmosphere is filled with dense smoke that results in breathing problems.

6 6

English Children do enjoy bursting crackers, but there are other ways of celebrating too. Like, one might throw a party and meet friends. Or else a person can visit an orphanage and give gifts to the little children to bring joy in their lives. We should make the children aware of the ill effects of crackers. Crackers are harmful as they lead to accidents due to carelessness. Also, the people who are employed for making crackers are children, who are below the age of twelve. This results in child labour on a large scale. Hence, crackers are not a source of happiness, but of grief for a lot of people in our society. Q.7. Expansion of an idea (any one) A1. i. Cleanliness is Godliness ‘Cleanliness is next to Godliness’ is a famous proverb. The proverb conveys the message that practising cleanliness is a good habit and that it leads us towards goodness in every walk of life. Here, the term ‘cleanliness’ doesn’t limit itself to just the act of cleaning one’s body, but also keeping the mind and the soul calm and peaceful. This would definitely help a person to achieve success in life, as the person would be able to focus on one thing at a time. A chaotic mind doesn’t help to complete goals. Moreover, maintaining cleanliness internally and externally helps to develop our personality. It attracts positive energy and helps to give out positive vibes to the people in our surrounding. Thus, it helps us to progress and lead. Cleanliness also means to keep our environment clean, as it would lead to a healthy surrounding and a hygienic habitat for all living beings. This would in turn reduce the spread of diseases and thus, longer life span. It is true when people say that a clean self and a clean environment helps to bring a person closer to God. ii.

[5]

A stitch in time saves nine. This is well known proverb, which means that if we solve a problem as soon as it arises then it saves a lot of time and energy later. Delaying a solution results in more work later and it also increases the problem at times. Hence, if a person has an issue at hand then it advisable to solve it as quickly as possible rather than postponing it endlessly. This proverb can also be applied to correct the wrongs in time and to realise one’s mistakes before the time runs out. For instance: A person can check his/her bad habit and try to get a control over it before that particular bad habit creates havoc in his/her life. All of us have limited period of time to achieve our dreams. Thus, it is advisable to utilise time to the optimum level. This can be done only if we take action at the right moment. For instance, being a student, we should be able to manage our lives and that can only be achieved if we do everything on time. If an assignment is given to us and a deadline has been set, then we should make a point to complete it at least a day in advance so that it leaves us with enough time to revise. We would not be able to do justice to the assignment if we delay our work until the last moment. Thus, it is true when we are advised to take charge of situations in our lives before they spiral out of control. OR

A2.

Develop a story in about 80-100 words with the following ending. Give a suitable title: _______ Thank God I found my Science Journal before the last date of submission. The mystery of my Science Journal Two weeks before the submission, my friend Rohan came to borrow my science journal to complete his entries. He was a good friend of mine and so, I gave it to him. Two days before the submission, he informed me that he had lost my journal. I was shocked and worried sick. We went to his house and began the search for my journal, but were unable to find it anywhere. Finally, Rohan recalled that he had forgotten it in the neighbourhood library. We didn’t waste a moment and rushed to the library. We looked for the journal everywhere, but still couldn’t find it. We took the last resort and went up to the librarian for help. He returned with my journal, which he got from the lost property section. I felt so relieved at the sight of it. Thank God I found my Science Journal before the last date of submission.

7

English

BOARD ANSWER PAPER : JULY 2015  ENGLISH  SECTION  I (Reading Skills, Grammar and Vocabulary (Prose)) Q.1. (A) A1.

Read the following passage and do the given activities: (i) False. The first thought that entered the writer’s mind was that it was his father or brother. (ii) True. (iii) False. The grandfather was in the attic. (iv) False. The narrator was in the bathroom when he heard the steps.

[½] [½] [½] [½]

A2. Character Mother Herman Roy The Narrator

Action Sleeping Sleeping Gone to Indianapolis Rubbing himself with a towel

[½] [½] [½] [½]

A3.

(i) - (e); (ii) - (a); (iii) - (d); (iv) – (c)

[½ mark each]

A4.

(i) (ii)

A5.

If on a dark night, a get to hear any unusual sound, I would get suspicious and try to sneek into the kitchen to check who is there. However, if I get too scared, I will immediately ring and alarm waking up my family to seek their help.

(B) B1.

Read the following passage and do the given activities: (i) (ii) Two regiments of Indian Army

We were expecting them to come home any time. I heard the footsteps, didn’t I?

Madras regiment

Assam Rifles

[1] [1] [2]

Two regiments of Indian Army Tea

Coffee [½ mark each]

B2.

(i) (ii) (iii) (iv)

they had to perform their duties at the patrol borders. they were speaking in their own language and were not afraid of being overheard. the train had many soldiers and workers and doctors travelling on it. the writer felt confused listening to the different languages being spoken by the people in the train.

[½] [½] [½] [½]

B3.

(i) (ii) (iii) (iv)

ubiquitious polygots minority ailment

[½] [½] [½] [½]

B4.

(i) (ii)

What was the other half was made up of? Why were the third kind of passengers forced to come down thousands of kilometres?

[1] [1]

B5.

Yes, I agree that the writer has given a kaleidoscopic view of India. In the passage, the writer portrays the diversity, multicoloured and prismatic culture of our country. The writer could experience the stark difference in the life style of the people from South to North with various languages spoken, different cuisines savoured, people following different occupations and also the ever changing geographical conditions. All these factors signify that India is truly a country of ‘unity in diversity.’

[2]

1

Board Answer Paper : July 2015 Q.2. (A)

Read the following passage and do the given activities:

A1.

(i) (ii) (iii) (iv)

The son and the daughter-in-law became irritated with the mess. The husband and wife set a small table in the corner of the room for the old man. The father noticed the son playing with the wood scrap on the floor. The words of the little boy so struck the parents that they were speechless.

[½] [½] [½] [½]

A2.

(i)

The son and daughter-in-law became irritated with the mess. ‘We must do something about grandfather’, said the son. ‘I’ve had enough of his spilled water, noisy eating and food on the floor.’ Sometimes, when the family glanced in his direction, he had a tear in his eye as he ate alone. One evening before dinner, the father noticed his son playing with wood scraps on the floor. He asked the child sweetly, ‘What are you making?’ Just as sweetly, the boy responded, ‘Oh, I am making a little bowl for you and mama to eat your food for when I grow up.’ The words so struck the parents that they were speechless. Then tears started to stream down their cheeks. Though no word was spoken, both knew what must be done. That evening the husband took his father’s hand and gently led him back to the family table.

[½]

(ii) (iii)

(iv)

[½] [½]

[½]

A3.

(i) (ii) (iii) (iv)

frail admonitions often sweetly

[½] [½] [½] [½]

A4.

i. ii.

Taking his father’s hand, he led him back to the table. He asked the child sweetly, what he was making.

[1] [1]

A5.

Yes. The story appeals to me. The story carries a strong message about a common issue faced by many households in the present times. It explains the importance of valuing the elders and treating them with respect. The story tells us that in old age, elders should be helped rather than being left alone. It speaks about what children learn from what they see and if we do not respect and love our parents, we will not receive love and respect from our children either.

(B)

Read the following passage and do the given activities:

B1.

i. ii. iii. iv.

Cycling is clean because it produces no fumes Bicycles are cheap to run Cycling keeps us fit Bicycles are quiet

[2]

[½] [½] [½] [½]

B2. Point of difference Cycle

Pollution Clean

Price Cheap

Health of a rider Keeps healthy

Other Vehicles

Produces dirty fumes

Costly

Makes us unfit

Space on the road Too small to take up much space on the road Cover major space [½ mark each]

2 2

B3.

(i) (ii)

Here, the word ‘too’ implies ‘also’. Here, the word ‘too’ show how small the bicycles are to take up road space.

[1] [1]

B4.

(i) (ii)

Very few cities in the world are as polluted as Delhi. Motor repairs are more expensive than cycle repairs.

[1] [1]

B5.

Cycling is definitely safer and easier in cities. This is because, cities have huge traffic and cycles can easily make their way through the traffic as they are small and don’t need much space. Secondly, cycles are clean. They do not produce any dirty fumes and hence they are safe.

[2]

English SECTION  II (Poetry) Q.3. (A) A1.

Read the following extract and do the given activities: i. singing ii. coming heavily iii. rejoicing iv. bright

[½] [½] [½] [½]

A2.

Night: The night is described as windy and rainy. Morning: The morning is described as calm and bright.

[1] [1]

A3.

The figure of speech is Persmification because ‘Sky’ is given the human quality of rejoicing and ‘morning’ is given the human quality of taking birth.

[1]

(B) B1.

Read the following lines and do the activities: (i) Washed clothes (ii) Sew (iii) Cook (iv) put her son to bed

[½] [½] [½] [½]

B2. (i) (ii)

Expectations of the son The child expected his mother to play little games with him. The child expected his mother to sit with him to share the fun of his picture book.

(ii) (ii)

Reactions of the Mother Mother did not have time. Mother would say that she would sit with him a little later. [½ mark each]

B3.

Q.4. (A) A1. A2.

A3.

day-play; to-you; cook-book; fun-son

[1]

SECTION  III (Rapid Reading) Read the following passage and do the given activities: (i) Cantonment at Allahabad (ii) Thirteen

[½] [½]

Cantonment area: Quiet, orderly place with broad tree-lined roads that carried the names of long-dead Britishers Commercial area of a city: Full of razzledazzel; noisy and busy.

[1] [1]

A mother decorates the house to suit the requirements of her family. She ensures that things are arranged so that they can be easily accessible for everyone. A mother is selfless and her sole intention is to provide comfort to her family. Hence, a mother converts a house into a home by giving it a personal touch.

[2]

SECTION  IV (Writing Skills) Q.5. (A) A1.

Attempt any one of the following letters with the help of the following leaflet: Rajiv Singh B/24, Queen Apts, Annie Besant Road, Mumbai – 400 018. 25th Apr, 2015. Dear Ajay, I hope this letter finds you in good health. How were your exams? My exams went well. Now that our vacation has started, I am going for the much awaited holiday with my family. This year we are travelling to Coorg, which is a beautiful hill station situated in Karnataka. I am writing to invite you to join us for this trip. It will be great fun. The place has many tourist attractions. There are two wildlife sanctuaries near Coorg; namely, Pushpagiri and Brahmagiri. They have a variety of wild animals, including the Indian Giant Squirrel, the

[5]

3

Board Answer Paper : July 2015 Asian Elephant as well as many endangered species of birds. We will also visit the Madikeri Fort, which highlights the historical importance of the place. The major river, Cauveri, is situated in Coorg. The place is famous for spices such as pepper, cardamom, nutmeg, turmeric and lemon grass. We can experience the beauty of the nature, as Coorg houses different kind of trees such as bamboo, sandalwood and rosewood. The whole tour will be organised by the Karnataka Tourism Development Corporation and I am sure this trip will be a wonderful experience. Let me know if you are keen on joining us. I will wait for a positive response from you. Do reply as soon as possible, so we can confirm our bookings. Give my regards to everyone at home. Your friend, Rajiv OR A2.

Rajiv Singh B/24, Queen Apts, Annie Besant Road, Mumbai – 400 018 25th Apr, 2015 To, The Manager, Karnataka Tourism Development Corporation Subject: Booking enquiry for Coorg Sir,

I intend to book for a holiday at Coorg, Karnataka, for 5 days and 4 nights from 5th May, 2015 to 9th May, 2015. I wanted to enquire if the bookings are available for these dates. Also, please let me know the approximate charges for the trip. Kindly provide more information on the sightseeing that will be covered in the package. I am keen on visiting the Madikeri Fort. I would prefer hiring the services of a tourist guide, who would explain the history and the importance of the Fort. Kindly, let me know if there are any recreational activities and adventure sports available at Coorg. We would like to reserve one day for the shopping of various spices that are available there. It would be great if you could help me with the above information, so that we can plan our stay. Preferably, if you could send us an itinerary, it would be easier to plan our holiday. I look forward to receiving your reply at the earliest. Thanking you. Yours faithfully, Rajiv Singh

(B) B1.

4 4

Attempt any one of the following: A Visit to the Old Age Home 26th June, 2015 Rashtriya Shaala, Ghatkopar, organised an event to pay a tribute to the elderly members of the society. Standard 10th students were taken to ‘Nirmal Old Age Home’, in Thane to celebrate the foundation day of the school. The old age home housed nearly 100 residents. All the members were above the age of 75 years. Majority of the members staying at ‘Nirmal’ had no family members and most of them did not have any financial background either. Each member had an independent reason for coming to the Old Age Home. Some were comfortable, while some seemed detached. However, the physical condition of all the inmates was good. They were healthy and were facilitated with the medicines that they required on a daily basis. ‘Nirmal’ also had many recreational facilities, such as a library, a garden and a television room to keep the residents entertained. The students put up an entertainment programme, with dances and dramas, for the residing members. They also cut a cake to celebrate the foundation day of the school and shared the joy with the residents. The visit was an enlightening experience for the students, as it made them aware of the conditions of the old people in our society and their responsibility towards them.

[5]

English B2.

Q.6. (A) A1.

A2.

(B) B1.

OR : Hello, Kirti. How are you? : Hi, Megha. I’m fine. : What did you feel about our visit to ‘Nirmal Old Age Home’ yesterday? : It was wonderful. I was shocked to look at how big the place was. It housed almost 100 people. Me : Yes, it did. Even I was astonished that so many old members of our society were living alone. They were all above the age of 75 years. I feel so sad for them. Friend : Yes. It was really sad that at this age, they were living alone without a family. Me : I agree. They also didn’t have any financial background. They spent years working hard, but have no money at the time when they need it the most. Friend : Very true, my friend. But it is good that their physical condition is unaffected and they are provided with proper medicines and other facilities. Me : That’s right. I was very happy to see that. The fact that ‘Nirmal’ manages their routine medicines was very reassuring. Friend : Yes. Do you remember the kinds of recreational facilities they had? Me : Yes. They had a garden which was well maintained, and a television room to keep them entertained. Friend : They also had a colossal library with a variety of books. Me : Yes. But old age makes the strongest of people dependent. Friend : I agree with you. Me : But I must say, this experience was very enlightening and I will definitely pay another visit to the Old Age Home this weekend. Friend : I will come with you as well. Me : Sure. Friend : See you after school!

Me Friend Me Friend

Attempt any one of the following Sources of Energy Sources of energy can be broadly classified into two, namely renewable sources and non renewable sources of energy. Renewable sources of energy can be renewed and they are unlimited. Non renewable sources of energy cannot be renewed and they are limited in nature. Sun, rain and wind are classified as renewable sources of energy, while coal, natural gas and oil are classified as non renewable sources of energy. Solar energy is generated from the sun. All these different sources of energy are used to generate electricity.

[5]

OR River Nile: Life of the ancient and present Egypt. Every spring, when the snow melted in the mountains, River Nile rose in flood and spilled across the fields, not only watering them, but leaving fertile coat of mud. The Pyramids and Sphinx: These are wonderful monuments built by the pharaohs or kings of ancient Egypt. There are three large pyramids at Giza. The biggest, built for Khufu, was about 147 metres tall and was made from 2.3 million blocks of stone. Each pyramid took about 20 years to build. The Mummy: The ancient Egyptians believed that when a person was alive, he or she had three souls. When the person died, the three souls died too. They would not go to the next world if the body was not kept as it was. That is why they tried to keep the bodies of the pharaohs by ‘embalming’ them with oil and salt and wrapping them with bandages to create a ‘mummy’. Attempt any one of the following: Good Morning to all the teachers and my dear friends. Today, I would like to speak about the importance of a healthy life. We are aware of the famous proverb ‘Health is Wealth’. It is indeed true and the proverb signifies the importance of health over wealth. All the efforts of an individual to become wealthy would be useless if the person is not healthy. Without our health, we cannot enjoy the fruits of being wealthy and hence, health is the true wealth of an individual. Laughter is a good antidote to our stress. It relaxes our body and boosts our immune system. Laughing gets our heart pumping faster. It burns calories and hence, is a great

[5]

5

Board Answer Paper : July 2015

B2.

Q.7. A1. (i)

exercise for our body. There are many laughter clubs that operate in the mornings, where the individuals laugh out loudly as an exercise. ‘Laughter is the best medicine’, is indeed true. Third and the most important point that I would like to make is, we are what we eat. It is very important to eat the right kind of food to stay healthy. Fruits are naturally low in calories. Different fruits give us different nutrients and they are instant energy suppliers. An ideal example of a completely healthy fruit is an apple. It has zero cholesterol and it provides carbohydrates. Similarly, various vitamins, minerals and antioxidants are present in different fruits. They should be eaten on a regular basis. Like the saying goes, ‘an apple a day keeps the doctor away’, one should eat healthy to stay healthy. Thank you. OR Watching television is a complete waste of time. The time one spends in watching television can be utilised to do several other productive activities. Watching television for some time for refreshment is acceptable but invariably, the time we spend tends to exceed. Watching television kills our imagination and hinders our ability to think. It makes a person dull and affects his or her thinking power. Watching television can also create physical problems for an individual. A person, while watching television, usually sits in the same position and the body is without any form of movement or exercise for longer hours. This may cause back problems and other physical pains. It also affects a person’s eyesight. [5] Perseverance means persistently doing something, despite the difficulty or the delay in the results. One has to face several hurdles and obstacles to achieve success in life. It is only through perseverance that we can achieve our goals. Success does not come easily. It can be achieved only by burning the midnight oil. The qualities of determination, discipline and dedication are the pillars of perseverance. Success is a long and tiring journey, which requires a lot of hard work and patience. Indeed, the fruits of success are sweet. But to reach the destination of success, one has to swallow bitter pills of perseverance and overcome all the obstacles in the path. If we learn to enjoy our work and practice patience, we will unlock the path towards the success with the key of perseverance. (ii)

A2.

6 6

Man is a social animal. By nature, he cannot live alone. He always seeks the company of other people. A man is usually judged by the kind of people he associates with because, to some extent, a person’s tastes and preferences are influenced by the tastes and preferences of the people he hangs out with. For example, if a child is studious and likes reading books and studying, he would make friends who have similar interests. Thus, a person’s nature, likes, dislikes and preferences can be judged from the kind of people he keeps company with. OR

The Two Best Friends Once there were two best friends, Rajiv and Arjun. They always studied together. They had a common friend named Sanjay, who was jealous of their friendship. One day, Sanjay stole Rajiv’s journal and copied all the answers from it. He then circulated the journal in the class, allowing other students to copy from the notes. Sanjay told Rajiv that the notes were given to him by his friend, Arjun. Angry, Rajiv stopped talking to Arjun. Arjun had planned his birthday party and wanted to invite Rajiv. But whenever he tried to talk to Rajiv, he received no response. Unaware about the situation, but angry at Rajiv’s behaviour, he decided not to invite Rajiv to his party. Feeling guilty for not wishing his friend, Rajiv decided to leave a present on Arjun’s desk the next day. He arrived in school early the next morning and found a student, who had copied his answers, sitting in the class. After confronting the student, Rajiv learnt that it was Sanjay who had circulated his journal. Rajiv explained the situation to Arjun and apologised for not trusting him. Arjun, on the other hand, informed that his birthday party was dull without his best friend. The two friends realised their mistake and decided to become good friends once again.

English

BOARD ANSWER PAPER : MARCH 2016  ENGLISH  SECTION  I (Reading Skills, Grammar and Vocabulary (Prose)) Read the following passage carefully and complete the activities given below: (i) Getting trapped (ii) Stranded in dark (iii) Shivering in the rain (iv) Getting drowned

[½] [½] [½] [½]

A2.

(i) (ii) (iii) (iv)

[½] [½] [½] [½]

A3.

(i)

(a) (b)

stranded trapped

(ii)

(a) (b)

(2) (3)

A4.

(i) (ii)

(a) (b)

A5.

The saying ‘One good turn deserves another’, mainly explains the importance of performing acts of kindness and being humble. It is very important to be humble and thankful for what we receive in life and performing acts of kindness is the best way to express gratitude. I had an experience once when I was travelling by a bus and I realized that I had lost my wallet. I felt embarrassed as I realized it only when the conductor came to me. A lady offered to buy me a ticket and I thanked her. The next day I saw a friend running late for his exams and struggling to reach the school. He was not able to find an auto. I was passing by with my dad and requested my dad to drop him to the school. We offered to drop him off. He was thankful to us and I am sure he too will return his good turn to someone in need.

(B)

Read the following passage carefully and complete the activities given below:

B1.

(i) (ii) (iii) (iv)

Regularity Hard work Kindness Tolerance

[½] [½] [½] [½]

B2.

(i)

The author disliked the teachers who taught lessons of kindness, tolerance and patience the harder way, by behaving in the opposite manner. Sudha Ramasubramanium advised the author not to worry about the exams and concentrate on health. She also assured the author that he could easily clear the exams at any time.

[1]

Q.1. (A) A1.

(ii)

Rajen Dutia received an urgent call. Mumbai had come to a halt and people were trapped everywhere. Rajen found Rashmi as well as a dozen other people shivering in the rain. He took them to his one-bedroom flat.

[½] [½] displease unsafe

[½] [½]

doesn’t it? ability

[1] [1]

B3.

(i) - (d), (ii) – (c), (iii) – (f), (iv) – (e)

B4.

(i) (ii)

B5.

Yes. I do agree that a teacher should also be a good friend. Teachers groom us and help in developing our personality. Their influence has a great impact on the students. Being good friends with students can help the teachers in creating the right kind of impact and influence. Hence, a teacher becoming good friends with the students is like an added advantage.

[2]

[1]

[½ mark each]

What did she make the author realize? I was taught by her in College.

[1] [1] [2]

1

Board Answer Paper : March 2016 Q.2. (A) A1.

A2.

Read the following passage carefully and complete the activities given below: (i) (d) Zeus (ii) (b) Four years (iii) (a) Olympics (iv) (d) Enclosure

[½] [½] [½] [½]

(i) (ii) (iii) (iv)

[½] [½] [½] [½]

quadrennial ruins compete victor

A3. Noun beauty

A4.

Adjective beautiful

Verb beatify

[1]

Monsoon certainly add beauty to the greenary of Kerela.

[1]

(i)

[1]

(ii)

The old ruins are shaded not only by evergreen oaks, pines and poplars but also by olive trees. Married women were denied of being present.

A5.

Winners in Olympics receive medals – gold, silver or bronze and cash prizes from their countries. The amount for cash prizes is different for each country. India has announced cash prize of ` 1,00,00,000 for its gold medal winners, ` 75,00,000 for the silver medal winners and ` 50,00,000 for the bronze medalists

(B) B1.

Read the following passage carefully and complete the activities given below: (i) (b) an engineer studying in BITS Pilani (ii) (c) one moon mission had opened up many avenues in science and technology for mankind.

B2.

(i) (ii) (iii) (iv)

tiny pea, pretty and blue united mankind in technology and knowledge. the romance of space science and the way we look at our planet Earth and its satellite, the moon. was an engineering student at BITS, Pilani.

[1] [2]

[1] [1] [½] [½] [½] [½]

B3.

U

N

I

V

E

R

1

2

S E

P 3

A

P S

T

R

C

(ii) B5.

2 2

N

A

U

T

L 4

(i)

O L

E

B4.

A

M O

O N

[½ mark each]

For the first time, Neil Armstrong, Edwin Aldrin and Michael Collins were to land on the moon. Armstrong found that his thumb was blotting out the earth.

Yes. I would certainly like to be an astronaut. An astronaut has the rarest of the opportunities to explore the universe. I am very fascinated by the universe. Earth is a very small part of the universe and yet so beautiful. It thrills me to think how amazing the rest of the universe would be. The universe is also very mysterious and becoming an astronaut provides the chance to unfold this mystery.

[1] [1] [2]

English SECTION  II (Poetry) Q.3. (A) A1.

Read the following extract carefully and complete the activities given below: (i) heaps of hate (ii) selfish aims and ends (iii) ruthless tyranny (iv) exploitation

[½] [½] [½] [½]

A2.

The poet explains that famines and drought spread such darkness that people are unable to even cry and groan. Humans are turned into skeletons and bags of naked bones due to the destruction caused by famines and drought.

A3.

(i) – (b); (ii) – (a)

(B)

Read the following extract carefully and complete the activities given below:

B1.

(i) (ii) (iii) (iv)

Keep the will to win hold friends dream little and do much Keep a cheerful grin

[½] [½] [½] [½]

B2.

(ii) (iii) (iv) (v)

being just to your fellow man looking forward and thinking high being through, yet making speed fighting, staunchly, but keeping sweet.

[½] [½] [½] [½]

B3.

(ii)

aabb

[1]

[2]

[½ mark each] [5 marks]

SECTION  III (Rapid Reading) Q.4. (A) A1.

Read the passage carefully and complete the activities given below: (i) False (ii) True

[½] [½]

A2.

(i) (ii) (iii) (iv)

[½] [½] [½] [½]

A3.

People who change households frequently have to face many challenges. Firstly, the house of the family changes and the new house has to be redecorated. Secondly, the surroundings and neighbourhood are new each time and the family has to adapt every time to new surroundings. Thirdly, the children of the family have to go to a new school every time there is a relocation and they have to adjust with the new teachers, make new friends etc. Hence, people who change households frequently have to face many challenges.

long dead Britishers. full of sazzle-dazzle. furnishing the huge, echoing rooms. unpredictable

[2]

SECTION  IV (Writing Skills) Q.5. (A) A1.

Do any one of the following activities:

[5] Vijay Sharma, 402, Mumbai Boys Hostel, Churchgate, Mumbai – 400 002 Date: 19th Aug, 2016

Dear Daddy, How are you? How is everyone at home? I hope you all are doing good. I am keeping fine here. I want to ask for your permission to go on a picnic. Our school is taking us to Lonavala. It is a hill station near Mumbai. It boasts of pleasant weather and scenic beauty. We shall also visit many places like the Wax museum, Narayanidham, Dams and the Duke’s Nose. It will be a one day picnic. We will be leaving from the school at 7:30 a.m. sharp. We shall be back to school by 9:30 p.m. The contribution for the picnic is `500.

3

Board Answer Paper : March 2016 All my friends will go for the picnic and I too wish to accompany them. Please grant me the permission and kindly send the money for the contribution. I will be eagerly waiting for your reply. Give my love to mom and Sanju. Take care. Your loving son, Vijay OR A2. Ramesh Singh, B-42, Bharat Co.op Hsg. Soc., Dadar (E) Mumbai – 400 014 To, The Secretary, Bharat Co.op Hsg. Soc., Dadar (E). Mumbai Subject: 30% Water cut in Dadar area Sir, I am writing this letter to draw your attention to the latest news regarding a 30% water cut that will be implemented in Dadar and its nearby areas due to major repairs of a pipeline, as reported in today’s ‘Times of India’. This is going to pose a serious problem as it will affect the water supply in our society. Thus, I would request you to make provisions to store for the welfare of the society. Also, if you could inform all the members of the society about this development, everybody will be able to store water for their own personal usage. Thankfully, the water supply will resume on Sunday night and hence, we would require to store water only for a day. Kindly look into matter and take immediate steps to avoid water shortage. Let me know if you need any help or support from my end. Thanking you Yours faithfully, Ramesh Singh (B) B1.

Do any one of the following activities: Rights For The Girl Child 19th August, 2016 The Human Rights Department had organized a programme in Nehru Nagar, Ville Parle, to save the rights of a child. The programme aimed at creating awareness about the rights of a girl child to free education. People were informed about the facilities that have been made available for the parents, like access to textbooks and note-books free of cost, bicycles for travelling etc. The volunteers also spoke about the insurance facilities and free medical treatment available for the female children. Equal rights for the girl child and the male child were also discussed to create awareness amongst the people. It was an eye opener for the audience. OR

B2.

Me Friend Me Friend Me Friend Me Friend Me

4 4

: Hi Ravi, how are you? Did you read the news about the Master-Blaster’s last innings? : Yes, Amit. I did read the news about Sachin Tendulkar’s last innings. It is so sad, we won’t be seeing him play for our country anymore. : Yes, it’s really sad. He is an inspiration for all. He has so many achievements under his name. Do you know he was awarded the ‘Bharat Ratna’ this year? : Yes, I have read about it. Not only that, he has piled several other awards and has also broken many records. : True. He is a versatile player and it is lucky to have players like him in a team. : I agree with you. No wonder he is so popular among teenagers. : Not just teenagers, he is every citizen’s pride and there are mixed feelings across the nation about his retirement. : That is right. I hope we find more players like him, who make our country proud. : Yes, me too.

[5]

English Q.6. (A) A1.

A2.

Do any one of the following activities: The manuscripts are collected from both students and the teachers. These manuscripts are thoroughly screened and the necessary additions, alterations and omissions are made. After the changes, a rough draft is prepared. The manuscripts along with a dummy are then sent to the printer. It is followed by proof correction and the book is sent for final printing. OR Keeping Healthy Do’s 1. Include vegetables and fruits in your diet. 2. Drink a lot of water. 3. Exercise regularly. 4. Breathe deeply. 5. Sleep for at least 7 hours a day.

(B) B1.

B2.

Q.7. (A) A1.

[5]

Don’ts 1. Avoid junk food and aerated water. 2. Avoid sitting for longer durations. 3. Do not ignore the importance of good breathing habits. 4. Avoid sleeping at irregular hours.

Do any one of the following activities: Good morning to all the teachers and my dear friends. Today, on this special occasion of ‘Environment Day’, I would like to speak about the importance of conserving our environment. We celebrate this day to show our gratitude towards nature for providing us with beautiful surroundings. Sadly we have been taking excessive advantage of nature, so much so that, nature has now began to pose a threat to our survival, which we continue to neglect. Deforestation is a classic example of excessive use of nature. Especially in states like Maharashtra, deforestation has been done beyond limit, under the pretext of urbanisation. Forests help to maintain the ecological balance in the environment. Deforestation has thus, led to an imbalance in the environment. This imbalance has affected the environment severely and has resulted in serious consequences. For example: Tsunami that created havoc in 2004 is the best example in India. I would like to conclude by saying that we should all do our bit for the conservation of environment. We should adopt methods like planting more trees, saving energy and resources for a better future. Thank you. OR Deforestation is the cutting down of trees for the purpose of urbanization. The need for more space continues to grow with the rise in population. However, deforestation is not the right approach, as it causes damage to the environment. Wild life gets affected severely and many species of birds and animals are led to the verge of extinction. Global warming too is a serious threat to mankind and deforestation only adds to the problem. The rich flora and fauna that forms a part our biodiversity is also endangered. Thus, deforestation is not the right path to achieve progress of mankind.

[5]

Do any one of the following activities: (i) Dishonesty never pays in the long run: It is true that dishonesty never pays in the long run. We are all aware of the famous saying that ‘Honesty is the best policy’. One should always be honest in life. Dishonest people may succeed in life but the success will only be short lived. In the long run, they always pay a price for their dishonesty. A person, who is not truthful is bound to make mistakes and as soon as it gets revealed, the person loses everybody’s trust. Therefore, being honest is the right path as it assures success in the long run.

[5]

(ii)

Time and tide wait for none: This saying emphasizes on the importance of time. Time is precious and every second that we do not work is a second wasted. We should learn to value time. Time has been compared to a tide as the sea waves do not wait for anyone. No matter what the situation is, waves continue to come and go. Similarly, time does not wait for anyone either. So, it is important to be punctual and to complete our work on time. Delay in completing a particular task can have an adverse effect on the entire schedule of a person and therefore, one should learn to respect time and to utilise it properly.

5

Board Answer Paper : March 2016 A2.

(i)

(ii)

6 6

OR The dishonest salesman. Raju was a salesman in a shop for men’s shirts. He received an incentive of `10 for each shirt that he sold. Once the shop received a stock of poor quality shirts and it was decided that the shirts will not be sold. But Raju was greedy for the incentive. So, without the knowledge of the shop owners, he began to sell the shirts to the customers and got more sale under his name. Nobody knew about the sale of the defective shirts and Raju got a high incentive that month. In the next month, the customers who had bought the defective shirts came back with complaints. The owner was shocked to see the defective shirts brought by customers. After inquiring, he found that Raju had sold those shirts. Raju was fired from the job and all the incentive was recovered from him. Raju realised his mistake and decided to not be dishonest ever in his life again. The habit of late-coming. Rinku was 16 years old. Like all other students, even Rinku was nervous about her S.S.C. board examination. She was good in her studies but poor at managing her time and hence, she was always late everywhere. The preliminary examination was being held at the school and because of her tardiness, Rinku reached late for her exam by 45 minutes. The teachers did not allow her. Rinku felt terrible. After the exam, the teacher called Rinku and explained to her the importance of time. She made her realise the consequences of being late. The teacher guided Rinku to manage her time well, when she informed her of her problem of dealing with time. She advised Rinku to maintain a time-table in order to manage her time well. She also told Rinku to never waste her time because time and tide wait for none.

History and Political Science

BOARD ANSWER PAPER : MARCH 2015  HISTORY AND POLITICAL SCIENCE Q.1. (A)

(B)

Complete the following statements by choosing the appropriate alternatives from those given in the brackets: 1. It is considered that England is the origin of Industrial Revolution. 2.

Balkan Area was the part of Turkey empire.

[1]

3.

Stalin broke Yalta treaty and established his power on Poland.

[1]

Match the correct pairs: 1. Woodrow Wilson 2. Dr. Vikram Sarabhai 3. Dr. A.P.J. Abdul kalam

  

b. a. d.

Policy of self-decision India’s space Research Father of Indian Missile Programmes

Q.2. Answer each of the following questions in 25 to 30 words (any two): 1. i. Germany defeated Austria in 1866 and France in 1870. Later, Bismarck developed friendship with Austria. ii. In 1871, Germany annexed the French provinces of Alsace-Lorraine by the Treaty of Frankfurt. After that, Bismarck isolated France by keeping it aloof.   iii. England and France had traditional enemity. Bismarck ensured that these rival nations should not come together. There was also dispute between France and Italy about religious and colonial problems. Bismarck took an opportunity and included Italy in his group.   iv. In the year 1882, a Triple Alliance Agreement was signed between Germany, Austria and Italy.   2.

i. ii.

3.

i. ii.

The word ‘Imperialism’ has been derived from a Latin word ‘imperium’ meaning ‘rights or rule’. Imperialism can be defined as the domination of an undeveloped nation by a developed nation by virtue of establishing a colony.   In other words, imperialism consists in an absolute domination of one nation by another nation. Globalization mainly influences the economic field. However, the social, political, educational and cultural fields are also undergoing changes due to globalization.

Q.3. Give reasons for the following statements in 25 to 30 words each (any two): 1. i. Till the middle of the 19th century, the westerners didn’t have any idea of the interiors of the African continent. ii. Africa had dense forests, big lakes, perennial (constantly recurring) rivers and large tracts of deserts.   iii. Specific composition of Africa was not known to the world at large. iv. It was known as ‘Unknown or Dark Continent’. As a result, the discovery of interior parts of Africa did not take place and hence it was known as Dark Continent till the 18th Century. 2.

[1]

i. ii.

The Russian Tsar was despotic. He opposed the liberal and progressive ideology. Though, industrial development took place in his reign, but it was incompetent to satisfy the needs of common people. iii. The workers lived in misery and the quality of production was hampered due to use of conventional technology. Agriculture was the backbone of Russia however, old and improper facilities hampered the agriculture.   iv. Also, the imperial strategy of Tsar barred him to pay any attention to the internal development of Russia. Thus, an all round development of Russia did not take place.

[1] [1] [1]

[½] [½]

[½] [½]

[1] [1] [1] [1]

[½] [½] [½] [½]

[½] [½] [½] [½]

1

Board Answer Paper : March 2015 3.

The League of Nations was unable to stop warring countries due to the below reasons: i. The extreme nationalism and imperialism of few leaders of the European nations which initiated the second world war. ii. The selfish, strong and contrary to each other’s policies of member nations. iii. The disregard of the basic idea of forming League of Nations. iv. Lack of faith in International co-operation, lack of co-ordination between principal nations like France and England. v. Rejection of membership by America. vi. Lack of arm power to punish the member nations denying to obey the clauses in the agreement. [Any four reasons: ½ mark each]

Q.4. Answer the following questions in 30 to 40 words each (any two): 1. i. America could not tolerate the increasing domination of Japan. ii. It started chalking out the strategy for restricting the naval development and imperial expansion of Japan. iii. In the year 1921, the American President Hardings, convened the Washington meeting for bringing restrictions on naval forces. iv. As a result, there began a process of undermining the power of the Japanese navy. v. All the advantages allowed to Japan after the First World War were withdrawn. vi. This hurt Japan and resulted in destabilisation of Japan. 2.

i. ii. iii. iv. v. vi.

3.

In response to America’s NATO Treaty Russia founded Warsaw Treaty, organization of communist countries. The main objective of Warsaw treaty was to give a befitting reply to capitalist countries. Eight countries participated in the nation’s conference during the period 11th to 14th May 1955, in Poland. The countries Russia, Hungary, Czechoslovakia, Albania, Bulgaria, East Germany, Rumania and Poland participated. The treaty of friendship, co-operation and help took place. Stress was given on collective protection to form the combined armed forces. Nuclear power and ammunitions were prohibited. It was also decided to increase the economical and cultural relationship.  

Lenin announced the New Economic policy which consisted of both, privatisation and nationalisation to some extent. ii. The private industry, business and property were allowed, however to a certain limit. iii. This was opposed by extremist communist leaders. However, Lenin defended the decision by saying that it was a temporary compromise with the capitalist principles. iv. Transportation and external trade were also kept under the government control. Effects of the Policy: i. The New Economic Policy caused a big increase in the agriculture and industrial production. A greater area of land came under cultivation. ii. Private industries were allowed to be formed and were given the freedom to buy and sell their products in the open market. The New Economic Policy gave an incentive to the industrial production.

[½] [½] [½] [½] [½] [½] [½] [½] [½] [½] [½]

i.

Q.5. Answer the following questions in 60 to 80 words each (any two): 1. India was brought under the reign of England in the below manner: i. Policy of East India Company: East India Company was set up by Britain with a view to carry out business activities in India. Initially, the company focussed only on business. However, later, it dabbled into the Indian politics as the Mughal rule began to show the signs of decline, with intra-dynasty conflicts cropping up after the death of Badshah Aurangzeb.

2 2

[½]

[½] [½] [½] [½]

[½] [½]

[½]

History and Political Science ii.

The Karnataka Battles: Three battles were fought in the Karnataka region because of the rivalry between England and France. France won the first of the three battles, whereas, England defeated France in the other two. After the defeat of France, the roots of Britain got deeper into the Indian soil. iii. The Rise of British Rule in Bengal: The British victory in the Battle of Plassey in 1757 and the Battle of Buxar in 1764 paved way for the inception of the British rule in India. iv. The Expansion of British Rule in South India: Nizam, Hyder Ali and the Maratha rulers dominated South India in the second half of the 18th century. Hyder Ali and his son Tipu Sultan were defeated by the British in collaboration with the Nizam and the Marathas. Between 17751818, there occurred three battles between the Marathas and the British. Mahadji Shinde of the Marathas defeated the British in the first battle, while Britain won the other two battles. v. Subsidiary Alliance System: The Nizam accepted the Subsidiary Alliance System which forced him to station British army at his cost. This helped the British to expand their territories in India. vi. The Power Expansion in Punjab: The British couldn’t do any damage to the Sikh reign, as long as Maharaja Ranjit Singh was on the throne. However, after his death, there arose conflicts among the successors. This proved advantageous to the Britishers and they finally conquered the Sikh empire between 1845  1849. vii. The Absolute Rule of the British: Lord Dalhousie undertook the mission of merging the local princely states into the British Raj by rejecting the adopted successors in Jhansi, Nagpur, Satara, Udaipur and Sambalpur. The state of Ayodhya was merged under the pretext of maladministration. Thus, in the hundred years between 1757  1857, the entire region of India was brought under the governance of England.

2.

3.

Before Kemal Pasha’s reign, Turkey was known as an Islamic nation. The Sultan had kept under his command the religious and political powers. As Pasha got into power, he declared Turkey a secular nation.   i. He reformed the conservative and superstitious people of the nation with their dresscode. ii. He brought in modern dress-code, registration of marriages, Sunday instead of Friday to be the holiday.   iii. Women were given permission for education and jobs. iv. The field of education was freed from domination of religion and Pasha brought in modern education by virtue of various branches of Science. v. He followed the western judicial system in Turkey. vi. The judges were appointed on the basis of merit. vii. Farmers were counselled and given seeds and fertilizers by the government to improve agricultural production. The following were the events favourable for decolonization: i. Japan, though being a small nation defeated Russia in 1905. ii. This boosted the self-confidence of people of Asia as they realized that Europeans can be defeated.   iii. Nationalistic Movement originated in the colonies based on the doctrine of selfdecision advocated by American President Woodrow Wilson. They demanded political freedom.   iv. Asian people realized that their prime duty is to achieve freedom from the clutches of the foreign rule.   v. Considering this, Japan took a stand against Europeans.

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Board Answer Paper : March 2015 vi.

Asian soldiers helped allied countries in First and Second World War as they felt by doing so they would get political freedom after the War. vii. Colonial countries suffered huge wealth loss in the War, hence they were unable to keep the colonies under their control. viii. America and Russia, who emerged as superpowers after the Second World War were not in favour of colonialism. Q.6. Fill in the blanks with a suitable word from those given in the brackets: 1. Citizen have to accept some restriction on their personal liberty for security purposes.

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2.

The claim that we are superior to others creates inequality.

[1]

3.

Political parties play an important role in creating responsible government.

[1]

Q.7. Answer the following questions in one sentence each (any three): 1. Referendum is adopted to know public opinion on some important public issues and thereby include the people in the decision making process.   2. 3. 4. 5.

2.

3.

[1]

A party which has its area of influence in a particular region or a state is known as state level or regional political party.

[1]

The people who worked for abolishing the caste system in India were Mahatma Jyotirao Phule, Periyar Ramswami Naicker and Dr. Babasaheb Ambedkar.

[1]

Tolerance means accepting the opinions of others that can be different from one’s own opinion and allowing the other’s opinion to be expressed.

[1]

Representative Democracy is a democracy where the government is formed from the elected representatives of the citizens. Since the views of the citizens are expressed through their representatives, it is known as Representative or Indirect Democracy.   

[1]

Q.8. State whether the following statements are True or False with reasons (any two): 1. True i. Social relations are always based on unequal relations between men and women. Earlier in many countries, the right to vote was granted only to men and the women witnessed secondary treatment. ii. Several women’s movements were conducted due to which, gradually many countries granted women the right to vote.   iii. However, the constitution of India granted rights such as the right to vote to all the citizens irrespective of their gender.

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False i. For being recognized as a state or regional party, Election Commission of India decides the criteria from time to time. ii. These mainly include conditions regarding minimum votes and minimum seats. iii. Nationalist Congress Party has fulfilled the criteria for getting recognition as ‘National Party’. The influence of this party is not limited to state level, but also to a national level.   Thus, Nationalist Congress Party is a National party. True i. In a democracy, citizens are expected to have their own view in public matters and they should influence the government with their views. ii. This can be done by increasing people’s participation. The several ways in which people’s participation can be increased are through meetings, discussions and involvement in other political activities. iii. At the same time, rulers and administration are also expected to give appropriate response to the participation by people.   Hence, even though the representatives are elected by the people, citizens should regularly keep a watch on the functioning of the government.

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History and Political Science Q.9. Answer the following questions in 25 to 30 words (any one): 1. i. Democracy faces Economic Inequality as a challenge. ii. Democracy experiences limitations in a society having unemployment and poverty. iii. The challenge of maintaining democracy and at the same time tackling poverty, is difficult for democratic government. iv. In situations of extreme poverty, democracy remains only in name or endangered due to social rebellion.   2.

i. ii.

iii. iv.

In a democracy, the constitution gives various fundamental rights to the citizens. Similarly, freedom is given to the citizens for different matters. For eg. freedom of thought, freedom of expression, freedom to form association, freedom to criticize, freedom to approach the courts for protection of rights etc. These rights cannot be taken away by anyone as they are protected by law.   The government in majority has to respect the rights of minorities and guarantee protection to them.   Thus, a democratic government rules within the limits set by constitution and the citizen’s rights.

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5

History and Political Science

BOARD ANSWER PAPER : JULY 2015  HISTORY AND POLITICAL SCIENCE Q.1. (A)

(B)

Complete the sentences choosing the correct alternatives from those given in the brackets and write them on the answer sheet. 1. The Portuguese King Henry motivated navigation.

[1]

2.

The Balkan area was a part of the Turkish Empire.

[1]

3.

Krantisinha Nana Patil established a Parallel Government in Satara district.

[1]

Match the correct pairs: 1. Dr A.P.J. Abdul Kalam 2. Kemal Pasha 3. Karl Marx

  

b. c. a.

The father of Missiles Programmes in India The father of People of Turkey (Ataturk) German Thinker

Q.2. Answer each of the following questions in 25 to 30 words (any two): 1. i. In the second half of the 19th century, the courageous European travellers Mungopark, Captain Spake, Sir Samuel Baker, David Livingstone and Stanley discovered the regions belonging to the basins of the Nile, the Niger, the Congo and the Zambezi rivers in Africa. ii. They brought the above mentioned regions to the notice of the world. 2.

i. ii. iii. iv.

3.

i. ii. iii. iv.

Aggressive nationalism is the extreme belief that one’s home country is better and more important than any other nation in the world. European nations adopted aggressive nationalism. They established colonies in the Asian and African continents. This aggressive nationalism led to international conflicts. Benito Mussolini was the son of a blacksmith. He was a soldier in the First World War. After the end of the First World War, he had been a teacher and a journalist for sometime. Later, he entered into politics by establishing the Facist Party in 1919.

Q.3. Give reasons for the following statements in 25 to 30 words each (any two): 1. i. Till the middle of the 19th century, the westerners didn’t have any idea of the interiors of the African continent. ii. Africa had dense forests, big lakes, perennial (constantly recurring) rivers and large tracts of deserts. iii. Specific composition of Africa was not known to the world at large. iv. It was known as ‘Unknown or Dark Continent’. As a result, the discovery of interior parts of Africa did not take place and hence it was known as Dark Continent till the 18th Century. 2.

3.

i. ii.

The Russian Tsar was despotic. He opposed the liberal and progressive ideology. Though, industrial development took place in his reign, but it was incompetent to satisfy the needs of common people. iii. The workers lived in misery and the quality of production was hampered due to use of conventional technology. Agriculture was the backbone of Russia however, old and improper facilities hampered the agriculture. iv. Also, the imperial strategy of Tsar barred him to pay any attention to the internal development of Russia. Thus, an all round development of Russia did not take place. i.

ii. iii.

After the Second World War, the economy of all the nations was damaged due to great loss of life and property. Due to inflation, price-rise, shortage, wide-spread diseases, drought, blackmarketing and other adversities, people were harassed. There was a huge scarcity of food, clothes, medicines, coal and fuel.

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Board Answer Paper : July 2015 iv. This made the condition of common man miserable and pitiable. Thus, after the Second World War, the economic life of the common people got badly influenced. Q.4. Answer the following questions in 30 to 40 words each (any two): 1. The Assembly means the Parliament of the UNO. The main functions of the Assembly include: i. The Assembly is the platform where all the nations can put their grievances for discussion. ii. The discussions are held on matters that are: a. disturbing international peace. b. to observe the administration of the UNO. c. to elect the non-permanant and other representatives in the Security Council. iii. To appoint secretary general on the recommendation of security council. iv. The resolutions passed by the Assembly are only recommendary in nature and in no way binding on the Security Council. 2.

i. ii. iii. iv. v. vi.

3.

America could not tolerate the increasing domination of Japan. It started chalking out the strategy for restricting the naval development and imperial expansion of Japan. In the year 1921, the American President Hardings, convened the Washington meeting for bringing restrictions on naval forces. As a result, there began a process of undermining the power of the Japanese navy. All the advantages allowed to Japan after the First World War were withdrawn. This hurt Japan and resulted in destabilisation of Japan.

The disadvantages of Globalization are: i. The common man faces inflation. ii. Globalization, Privatization and Liberalization may lead to unemployment. iii. The abolition of import tax has reduced national income. iv. The multinational companies are using the natural resources of poor nations indiscriminately. v. Due to uncontrolled competition, local small scale industries are suffering a loss. vi. Inequality between the rich and the poor nations in the world is created. vii. Degeneration of basic values. [Any six disadvantages: ½ mark each]

Q.5. Answer the following questions in 60 to 80 words each (any two): 1. The destructive effects of imperialism were: i. Trade of Slaves: The imperial nations ill-treated the people by buying and selling slaves for getting labour at cheaper prices. ii. Decline of Values: The policy of ‘divide and rule’ adopted by the imperial nations in order to maintain their reign, sowed the seeds of hostility among social groups. This led to degradation of morality because of enemity, violence, selfishness and indulgence among the people. iii. Economic Exploitation: The European nations competed amongst each other to procure raw materials and markets for their products. Undeveloped nations were the best source of such needs. Hence, they were colonized and exploited to the full extent. iv. Destruction of Village Autonomy: The land revenue system adopted by the British Government had a totally adverse influence on the rural life in India. Farmers mortgaged their land for paying taxes to the British government. As a result, they became bankrupt. The workers also lost their jobs due to closure of many small scale industries. v. Suppression of Underdeveloped Nations: In order to develop their economy, Imperial nations colonized many underdeveloped nations.

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History and Political Science vi.

Armament Race: The cut-throat rivalry amongst the imperial nations gave rise to an arms race. Every European nation grew suspicious of the other and braced up its military powers. The desire for ruling other nations and small scale struggles gradually magnified into an intense conflict which eventually led to the First World War in the year 1914. [Any four effects: 1 mark each]

2.

The nature of Globalization can be explained by the following points : i. Open Economy: Globalization has made it possible, to trade with any nation beyond borders. Multinational companies have been given easy entry in a nation. As a result, world has become a single market. The living standard of the people has changed because of Open Economy. ii. New Competition: Globalization has created new competition. Use of new technology has added to increase in production. Sale of goods in the world market has become possible, which resulted in the development of open competition. On one side, there is opportunity of trade while on the other side, employment in the developed nations is decreasing. New competition has also increased the financial inequality. iii. Investment Opportunities: Globalization has provided varied opportunities to nations and traders for investments in any nation. Earlier there were restrictions on investments in foreign countries, but now flow of capital is increasing. iv. Development of Cities: Globalization is a boon for developing nations. The growth rate of economy is 8%. New technology has added to the growth of cities, but at the same time, villages are deprived of development. India has made commendable progress in agriculture. Our country exports food grains to 21 countries. The development rate of India has gone above 6%. v. Use of Information Technology: Globalization got momentum due to development of Information Technology. Communication has become easy due to satellites. Internet has reduced geographical distance. World has become a global village. [Any four points: 1 mark each]

3.

The Quit India Movement: i. The working committee of National Congress sanctioned the resolution named ‘Quit India’ at Wardha on 14th July, 1942. ii. The resolution was sealed at all Indian Congress meet held at Mumbai under the leadership of Maulana Azad on 7th August, 1942. iii. Mahatma Gandhi was given the leadership of ‘Quit India Movement’. He gave the message of ‘Do or Die’ to the Indians. iv. To suppress Quit India movement, British Government arrested prominent leaders of National Congress on 9th August 1942. People got agitated by this incident and came on the streets. v. Meetings were arranged in Mumbai, Pune, Banaras, Delhi, Meerut, Mathura and Allahabad. vi. The satyagrahis took the administration in their hands and established parallel government under the leadership of Nana Patil at Satara district in Maharashtra. Parallel governments were also established at Purnia in Bihar, Baliya in Uttar Pradesh and Midnapur in Bengal. vii. The movement soon spread amongst the Indians who were settled in South-East Asia, China and Japan.

[2]

Azad Hind Sena: i. Quit India Movement rapidly spread among the Indians settled in South-East Asia, Japan and China. ii. By taking inspiration from a parallel government launched in India, Ras Bihari Bose established ‘Azad Hind Army’ in Japan.

[2]

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Board Answer Paper : July 2015 iii. iv. v. vi.

Later, this army was led by Subhashchandra Bose. He appealed to the people, “Give me blood and I will give you freedom”. He gave the slogan ‘Chalo Delhi’ through Azad Hind Army. He had also prepared to fight against the British by taking the help of the foe nations of England.

Q.6. Fill in the blanks with a suitable word from those given in the brackets: 1. Parliamentary Democracy exists in England and India. 2.

The claim that we are superior to others creates inequality.

[1]

3.

Voting is a primary political activity.

[1]

Q.7. Answer the following questions in one sentence each (any three): 1. The term ‘Referendum’ is used as ‘plebiscite’

[1]

2.

Tarabai Shinde’s family was a follower of Mahatma Phule.

[1]

3.

People’s participation is the core of democracy.

[1]

4.

The average voting percentage in Lok Sabha elections in India is 58%.

[1]

5.

The Government is required to take extra caution about the security of the people in view of the organized crime and terrorism.

[1]

Q.8. State whether the following statements are True or False with reasons (any two): 1. True i. Political party is a group of people having similar views on the particular topic. ii. All the members of a party have common opinion on political matters. iii. Political parties decide their strategy about various public questions. This is known as programme or policy of the party. The people who agree with this policy come together and form political party. 2.

3.

2.

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False i. India is a secular country with people belonging to different religions and characteristics living together. ii. People from different groups speak different languages, belong to different regions. iii. Each person of a group has his/her own occupation, hobbies, skills. Every group has its own set of cultural values. Due to this diversity, we find a completely heterogeneous society in India.

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True i. The United States is a democratic country. ii. The U.S. is a supporter of individual freedom and it opposes restriction on personal liberty. iii. The security of citizens is the duty of government and there should not be restriction on personal liberty for security purposes. Thus, there are no restrictions on citizens holding arms in U.S. and they have the liberty to hold arms.

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Q.9. Answer the following questions in 25 to 30 words (any one): 1. i. People believe that political parties will solve their everyday problems. ii. In turn, people support the respective political parties. iii. Political parties try to satisfy the demands of the people. iv. Through political parties, people feel that they can participate in the functioning of the Government. Thus, people feel affiliated with political parties.

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[1]

The basic features of democracy are: i. Elected representatives of the people rule and these representatives have final decision making power. ii. Elections are conducted in free and fair atmosphere. iii. Universal Adult Franchise is provided and every vote has equal value. iv. Fundamental Rights and freedom of the people are protected by law.

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History and Political Science

BOARD ANSWER PAPER : MARCH 2016  HISTORY AND POLITICAL SCIENCE Q.1. (A)

(B)

Fill in the blanks by choosing the correct alternative from those given in the brackets, complete the sentences and write the statements in the answer sheet (three out of three): 1. It is considered that England is the origin of Industrial Revolution. 2. Japan a nation, is called the ‘Land of Rising Sun’. 3. ‘An axe in the bunch of sticks’ is a symbol of the Fascist. Match the words from Column ‘A’ appropriately with the terms in Column ‘B’ and write the answer: 1. Nelson Mandela  b. Africa 2. Walter Lippmann  c. Mirage War 3. Dr. Homi Bhabha  a. Father of Indian Atomic Age

Q.2. Answer the following questions in 25 to 30 words each (any two out of three): 1. i. The imperialism carried out with an objective to bring profits to the nation, by exploiting the natural resources of an undeveloped nation, by means of economic and political dominance is called ‘Economic Imperialism’. ii. Economic Imperialism also means economic domination of one nation by another nation. 2. i. Japan was more or less involved in business with the Portuguese, the Dutch and Spanish right from the 16th century. ii. However, they were expelled, as these people tried to spread Christianity in the region. iii. Japan became self centered. iv. Due to which, its doors were closed for the European nations for one hundred and fifty years. Hence, Japan was called a hermit (recluse) nation. 3.

i. ii. iii. iv.

In November 1918, a Republican government was established in Germany soon after the Emperor abdicated the throne in the wake of the First World War. The new constitution of the government was adopted at Weimar. Hence, it came to be known as the Weimar Republic. The common people in Germany and armed forces were irritated at the Weimar Republic. Weimar Republic failed to improve the declining conditions in Germany.

Q.3. Give reasons for the following statements in 25 to 30 words each (any two out of three): 1. i. In the 20th century, there was a fierce competition amongst the imperial European nations which led to the armed conflicts. ii. Destructive weapons, arms and ammunitions, tanks, warships, machine guns, lethal explosives were used on a large scale. iii. There was rise of dictatorship in many nations. iv. The excessive ambitions, mutual disbelief, rivalry and ill-will amongst the Europeans increased, giving rise to explosive situations in Europe. 2.

3.

i. ii.

The Security Council of the UNO means the ministry itself. The main tasks of the Security Council are to discuss any issue disturbing international peace, to punish the guilty and disobeying nations, to take action against the nations disturbing peace with help of the military of the member nations and to approve new memberships. iii. The Security Council plays an important role in the working of the UNO. Thus, this committee is the heart of the UNO as it has the real strength of UNO. i. Computer provides us with necessary information by processing information and data that is fed by us. Also, it has a number of capacities viz. storing, processing, writing, reading, counting and designing. ii. It should also be noted that, a computer’s capacities are a numer of times more than a human brain. All such reasons results in speedy execution of work.

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Board Answer Paper : March 2016 Q.4. Answer the following questions in 30 to 40 words each (any two out of three): 1. The constructive effects of imperialism were: i. Physical Reformations: Europeans brought about many physical reformations such as making of roads for quick military movement and internal transportation, railway, post, telegraph, canals, aeroplanes etc. These developments helped the local people by creating a kind of interaction among them. ii. Spread of Education: Instead of importing educated people from their native places, the colonizers began to educate the local people for raising qualified manpower necessary for assisting in administration. They also gave a boost to education for the sake of business purposes and propagation of their religion. iii. Intellectual Change: An intellectual exchange started among the people belonging to different parts of the world. The people got acquainted with the innovative western ideas, technology, science, philosophy, literature, law and politics. The colonized people realized the principles of Liberty, Equality and Fraternity and the philosophies of Nationalism, Socialism, Communism and Democracy. iv. National Integrity: The imperial nations brought various parts of the colonies under one reign. This centralized governing system integrated the colonies. Earlier the colonies were divided and governed by various rulers which gave rise to irregularities in governance, law and legal system. Imperial nations brought the scattered regions and reigns under one banner, thereby establishing one governing system, uniform rules and regulations and one legal system. This led to a sense of national integrity among the people in the colonies. v. Rise of New Leadership: A monopolistic form of governance was brought about by putting down the royal regimes and the feuds of the colonies. The newly educated middle class started to oppose the western imperialism. As a result, the progressive-minded members of the middle class led many struggles for freedom, thereby giving rise to a new leadership. [Any three effects: 1 mark each] 2.

i. ii. iii. iv.

Lenin announced the New Economic policy which consisted of both, privatisation and nationalisation to some extent. The private industry, business and property were allowed, however to a certain limit. This was opposed by extremist communist leaders. However, Lenin defended the decision by saying that it was a temporary compromise with the capitalist principles. Transportation and external trade were also kept under the government control.

Effects of the Policy: i. The New Economic Policy caused a big increase in the agriculture and industrial production. A greater area of land came under cultivation. ii. Private industries were allowed to be formed and were given the freedom to buy and sell their products in the open market. The New Economic Policy gave an incentive to the industrial production. 3.

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The main objectives of the UNO are: i. To establish International peace and security. ii. To solve the crisis among the nations by way of justice and international law, avoiding wars. iii. To create healthy atmosphere for world peace by avoiding discrimination of strongest and weakest nations. iv. To increase friendly relations, co-operation and co-ordination among the nations. v. To bring all nations together. vi. To solve the economical, social and cultural problems by co-operation among all the nations.

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History and Political Science Q.5. Answer the following questions in 60 to 80 words each (any two out of three): 1. The Second World War began in the year 1939. The Second World War witnessed a large scale use of lethal weapons like atom bombs and modern weapons, creating an adverse impact on overall life of human beings in the below manner: i. Great Loss of Life and Property: The Second World War caused a great damage to the human life and property as compared to First World War. One and a half crore soldiers were killed on the battlefield. The war expenditure of all nations went upto 1,517 billion dollars. Buildings, houses, agriculture, hospitals, industries and dams were destroyed causing an irreparable loss. ii. The Financial Effect: The economy of all the nations was destroyed due to great loss of life and property. Due to inflation, price-rise, shortage, wide-spread diseases, drought, black marketing and other adversities, people were harassed. There was a huge scarcity of food, clothes, medicines, coal and fuel. The condition of common man was miserable and pitiable. iii. Moral degradation of Man: People’s attitude towards life changed entirely due to the terrorizing incidents during the war. There was a great shift in the attitude towards God, Religion and Women. The issues of widows and orphans became critical. The bread earners of number of families died in the war. iv. The Decline of Imperialism: The empires of Germany, Italy and Japan were brought down because of their defeat in the Second World War. The imperial foundation of the winning nations too got weakened. England and France tried to maintain their empires, but due to the huge losses suffered in the war, they were not able to withstand their hold over the colonies. India, Srilanka & Indonesia in Asia and Egypt, Sudan & Libya in Africa got independence. v. The onset of Cold War between America and Russia: In the post Second World War period, America underwent a political change. America had to look after the welfare of the democracies in the European nations as England and France gave up being the leaders in global politics. Russia was also emerging as another powerful nation. Russia initiated several nations into communism. Thus, the cold war began between the group of communist nations led by Russia and the democratic nations led by America. vi. The formation of United Nations Organization (24th October 1945): The world realized that the international problem could be solved by peace and not war. They realized that if another war broke out, it would destroy entire humanity. With the aim of resolving international issues through peaceful negotiations, establishing co-operation and coexistence and maintaining global peace, a League like international organization was set up on 24th October, 1945, named as ‘United Nations Organization’. [Any four effects: 1 mark each] 2.

The effects of the cold war were: i. World was Divided into Two Groups: a. The cold war was between Communism against Capitalism and Democracy. Russia was leading Communism and America was leading Capitalism and Democracy. b. Competition for power became extreme between America and Russia. ii. Growth in Weapons Competition: a. America and Russia tried to make their supporting countries strong in Army, Navy and Air force. The able administrative system was implemented. b. Modern missiles, fighter planes, nuclear weapons, submarines were produced on large scale. The competition in weapons became more immense. iii. Inspiration to Nuclear Weapons Competition: a. America destroyed Hiroshima and Nagasaki, the cities of Japan, by dropping atom bombs. Russia too proved its capacity by performing nuclear tests.

3

Board Answer Paper : March 2016 b.

iv. v.

vi.

3.

Due to cold war, the competition in the weapons got motivated and the world was on the verge of being ruined. Discredit of UNO: UNO was not able to achieve its objective of “The entire World is one family” because of VETO power of big nations. Human Welfare was Neglected: a. The human welfare and the care of commodities was totally neglected as majority of the income was spent on weapons and its research. b. This resulted in scarcity of commodities and affected the life of people very badly. The growth of Non-Aligned Movement: a. Many countries unwillingly participated in the group of superpowers because of the political and economical pressure. b. However, India, Egypt and Yugoslavia did not mix in any group and started the Non- Aligned Movement which gradually started becoming very strong. c. The superpowers took notice of it and reduced the intensity of the cold war. [Any four effects: 1 mark each] Jallianwala Bagh Massacre [2] In the year 1919, Rowlatt Act was passed which was considered to be unjust and unfair. i. In the provinces of Punjab, satyagraha was adopted to oppose the Rowlatt Act. The Government too resorted to oppresive measures. ii. Prominent leaders were exiled. Mahatma Gandhi was not allowed to enter Punjab. iii. Army was called to create terror amongst the Indians in Amritsar. Public meetings were banned in Punjab. iv. On 13th April, 1919, a meeting was called at the Jallianwala Baugh, Amritsar, to protest against the British policies. v. A number of people had gathered for the meeting when British officer General Dyer ordered to fire bullets at them. vi. Hundreds of people were killed in this massacre. Some people were injured. vii. As a mark of protest, Rabindranath Tagore returned the honour ‘Sir’ given to him by the British Government. viii. Mahatma Gandhi demanded that one should not co-operate with such government that behaves like a devil and Indian leaders too, demanded an inquiry on the inhuman massacre. Non Co-operation Movement: i. Mahatma Gandhi knew that British rule would not exist without the co-operation of Indians. ii. By keeping this in mind, he decided to launch Non Co-operation Movement. iii. The consent of Non Co-operation Movement was passed in 1920 at National Congress session in Nagpur. iv. It was decided to boycott foreign goods, government schools and colleges, awards and honours and parliament elections. v. During this period, British officers fired at the peaceful procession being carried out at Gorakhpur district in Uttar Pradesh. vi. Infuriated by this, people set a police station on fire. vii. Twenty-two policemen including one officer were burnt alive. viii. Gandhiji was so much grieved by the incident, that he called off the Non Cooperation Movement in 1922. ix. Thereafter, Mahatma Gandhi was arrested.

Q.6. Fill in the blanks by choosing the correct alternative from the bracket. (three out of three): 1. In Democracy, all citizens have equal right to vote.

4 4

[2]

[1]

2.

To maintain and capture power is the main aim of the political parties.

[1]

3.

Tarabai Shinde wrote a book called ‘Stree-Purush Tulana’ (comparison of women and men).

[1]

History and Political Science Q.7. Answer the following questions in one sentence each (any three out of five): 1. Democracy based on the direct participation of the citizens in the decision making process is known as direct democracy.

[1]

2.

A party who wins majority of the seats in the elections is known to be a ruling party.

[1]

3.

Democratic form of government is adopted by Independent India.

[1]

4.

Social pressure is the biggest challenge before democracy.

[1]

5.

In many countries, some regions are more developed than the other regions. This difference in the development of the various regions is known as Regional Inequality.

[1]

Q.8. State whether the following statements are True or False with reasons (any two out of three): 1. True i. Parliamentary democracy is a type of indirect democracy in which the power is vested with the Parliament. ii. India has Parliamentary democracy. iii. There are two chief executives in India, the President and the Prime Minister. 2.

3.

False i. Nationalist Congress Party supports democracy, social justice, equality, Gandhian principles and federalism. ii. Nationalist Congress Party has a support base and ruling partner in Maharashtra State Government. iii. The party has its influence in the states of Meghalaya, Manipur, Nagaland and Assam. False i. People should take interest and participate in political activities. ii. Citizens should be proactive and organize people to discuss about government’s policies. iii. Also, they should take initiative in complaining about problems in their locality and follow up on those complaints. Thus, higher the initiative, stronger the democracy will be.

Q.9. Answer any one of the following questions in 25 to 30 words (any one out of two): 1. Challenges related to personal liberty are as follows: i. Due to social pressure, individuals cannot behave in a manner which is not acceptable to society. e.g. Intercaste marriage. ii. Opinions of majority are generally imposed on minority. iii. Now-a-days for security of people, government restricts personal liberty. iv. Due to organized crime and terrorism, government has to impose restrictions on citizens for holding arms. 2.

i. ii. iii. iv.

When there is linguistic and regional diversity, the method of distributing power among the regions within the country is adopted. This method is known as the Federal System of government. The constitution itself creates governments at the regional level and decides the powers of the regional level governments. The decision about the extent of the powers of the regional governments is made by the constitution of the concerned country. Such distribution of power is an important way of maintaining democracy and diversity simultaneously. India has adopted such federal system.

[½] [½] [½] [½] [½] [½] [½] [½] [½] [½] [½] [½]

[½] [½] [½] [½]

[½] [½] [½] [½]

5

Geography and Economics

BOARD ANSWER PAPER : MARCH 2015  GEOGRAPHY AND ECONOMICS Q.1. (A)

(B)

Q.2. (A)

Complete the following statements by choosing the appropriate alternatives from those given in the brackets and rewrite the sentence in your answer-book. 1. Areawise India is the seventh largest country in the world.

[1]

2.

Rajasthan plain is known as Great Indian desert.

[1]

3.

The Barren island located to the east of the middle Andaman is the only active volcano in India.

[1]

Match the items in Column ‘A’ with those in Column ‘B’ 1. Gurushikhar b. Aravalli Mountain 2. Chota Nagpur Plateau a. Rich in minerals 3. Khadar d. Consists of new alluvial Give geographical reasons for the following statements (any two): 1. Regional approach to geographic studies is very important as it helps: i. to focus on a particular area. ii. in studying various physical as well as human aspects, which interact with each other and work in unison. iii. to provide relative homogeneity to the region. Such homogeneity is the foundation of regional approach. iv. to give an organised study of various phenomena that are related to each other in a region. 2.

i. ii. iii.

iv. 3.

i. ii. iii. iv.

4.

(B)

Himalayas act as a great climatic divide affecting large systems of air and water circulation. They help to determine meteorological conditions in the Indian subcontinent to the south and in the Central Asian highlands to the north. The Himalayan Ranges obstruct the passage of cold air from the north entering into India in winter and also forces the south westerly monsoon winds to give up most of their moisture within the sub-continental part. This results in heavy precipitation (both rain and snow) on Indian side. Thus, Himalayas not only protect India from chilling cold dry winds from entering India but also determine the precipitation in various regions of India. Lakshadweep is known as a tourist attraction for Indians since long time, due to its isolation and scenic appeal. Since such a small region cannot support industries, the government is actively promoting tourism as a means of income. The rich marine fauna is a delightful treat to the eyes of visitors. Water sports activities such as Scuba Diving, Wind Surfing and Water Skiing are quite popular, which attract the tourists.

i. ii.

In the Himalayan region, 80% population live in rural areas. There are large number of tribals like Gaddi, Gujjar etc., who migrate from place to place and live off their herds of sheep, goats and a few cattle. iii. Many tribal groups like Ladakhi have settled in distinct river valleys and practice shifting cultivation. The ladkhis have settled on terraces and alluvial fans that flank indus. iv. The Chamba traditionally lead a nomadic pastoral life in the upper indus valley. Thus, North Indian mountains are a homeland to many tribes.

Write short notes on (any two): 1. Devbhoomi (Uttarakhand) i. Uttarakhand is popularly known as ‘Devbhoomi’ i.e., the land of Gods. ii. It has been attracting tourists from all over the world since a long period of time. iii. Uttarakhand has many sacred pilgrimages of different religions.

[1] [1] [1]

[½] [½] [½] [½] [½] [½]

[½] [½] [½] [½] [½] [½] [½] [½] [½] [½]

[½] [½] [½]

1

Board Answer Paper : March 2015 iv. 2.

i. ii.

iii. iv. 3.

i. ii. iii. iv.

Q.3. (A)

The various places of pilgrimage in Uttarakhand include Haridwar, the Char Dhams  Badrinath, Kedarnath, Gangotri, Yamunotri and the Sikh pilgrimage of Hemkund. The high rainfall, hot and humid climate which leads to deep weathering has favoured luxurient growth of natural vegetation in the Western Ghats. A portion of the south Sahyadri is gifted with tropical rain forest. In these forests, trees like Mahogany, Teak, Bamboo etc. are found. Eucalyptus and teak are seen in the plantation forests. Trees like anjan, kanchan, mango, jackfruit, cashewnut etc. dominate the landscape in the Konkan region. In the Central Ghats, dense forest areas are located in some parts. The southern part of the Western ghats act as a habitat for a variety of wild animals such as elephants, bisons, leopards, tigers, bears, wild boars and different types of langurs. Western Ghats is one of the biodiversity hot spot and includes 7 national parks and 39 wildlife sanctuaries. The coastline of Kerala is known as Malabar coast. This coast has some relatively flat lands. The Malabar coast is characterized by development of lagoons and backwaters, which are locally known as Kayals. Vembanad is one of the longest backwater areas of Kerala.

[½] [½]

[½] [½] [½] [½] [½] [½] [½]

Draw a simple line graph by using the following data : Y

Scale: 1 cm = 100 million people

Population of India (1971-2011)

1300 1200 1100

Population (in millions)

1000 900 800 700 600 500 400 300 200 100

X

2 2

0

Y

1971

1981

Years

1991

2001

2011

X

[2]

Geography and Economics (B)

(C)

Observe the following map and answer the questions given below it (any two): 1.

River Kaveri has formed delta near Tamil Nadu Coast.

[1]

2.

Gulf of Khambhat is found near the Gujarat Coast.

[1]

3.

Mount Kalsubai lies on the Western Ghat.

[1]

4.

Kalsubai (1,646 m.) is the highest peak in the western ghat.

[1]

Mark the following in the outline map of India supplied to you. Write the names and give Index (any two): N

(2) 0

200

400 km.

(4)

(3)

Index: (1)

Andaman Islands

(2)

K2

(3)

Mumbai Port

(4)

Ganga River

(1)

[1 mark for each location]

3

Board Answer Paper : March 2015 Q.4. Answer the following questions in detail (any two): 1.

i.

The Punjab-Haryana region has a monsoon climate with dry cold winters and hot summers. The climate is characterized by extreme hot and extreme cold conditions.

[½]

ii.

The annual temperatures in the plain ranges from 2 C to 40 C.

[½]

iii.

The hot and dry winds blowing over these regions during the months of May and June are locally known as ‘loo’. They are followed by dust winds and occasional showers.

iv.

[½]

Rainfall decreases from about 950 mm near the Shiwalik range to 330 mm along the Rajasthan desert. The annual rainfall varies from 950 mm in Ambala to 460 mm in Hissar.

[½]

v.

Most of the rainfall in this region occurs during the months of July to September.

[½]

vi.

Due to the western depressions, some amount of rainfall is received in winter between December and March which proves useful to the Rabi crops. The occasional hailstorms prove harmful to the crops.

[½] INDIA Punjab-Haryana Plain

N

Punjab Haryana

2.

i.

Bay of Bengal

Lakshadweep

A r a b i a n s e a

Indian

Ocean

Most of the industries on this plain are located in the Hooghly Valley and AsansolDurgapur region.

ii.

[½]

Iron and steel industry is located at Kulti, Buranpur, Asansol and Durgapur while the Jute mills and cotton textiles industry are located along the banks of Hooghly river.

[½]

iii.

Chemical industry is concentrated in Kolkata and Howrah.

[½]

iv.

Paper industry is located in Kolkata, Titagadh, Naihat and Triveni.

[½]

v.

Chittaranjan manufactures locomotives whereas Haldia has a petrochemical complex, an oil refinery and a fertilizer plant.

vi.

[½]

The Kolkata-Hooghly industrial belt is the main industrial region in Northern Indian plains.

4 4

[1]

[½]

Geography and Economics INDIA Ganga Plains

N

Upper Ganga plain Ganga river Kanpur Gorakhpur

Allahabad

Patna Assam

Varanasi

Middle plain

Kolkata

Brahmaputra river

Howrah

Eastern plain

Index

Lakshadweep

A r a b i a n s

Upper Ganga plain Middle Ganga plain Lower Ganga plain

Indian

3.

i. ii. iii. iv. v. vi.

Ocean

Brahmaputra plain

[1]

Agriculture is the main occupation of the people in the Central Highlands. Cash crops such as cotton and soyabeans are grown in this region. The other major crops grown in the Central Highlands include rice, wheat, jowar, bajra, maize, soyabean. Pulses such as gram, mung and urad are also cultivated in this region. Peninsular plateau of India is dependent on rain for irrigation. The second major source of irrigation is ponds. The infertility of land, low productivity, lack of irrigation facilities and non-use of modern methods are some of the causes that have affected the development of agriculture.

INDIA

[½] [½] [½] [½] [½] [½]

N

(Peninsular plateau region)

Central Highlands Deccan plateau Arabian sea

Bay of Bengal

Lakshadweep Indian Ocean

Andaman and Nicobar

[1]

5

Board Answer Paper : March 2015 Q.5. Fill in the blanks by choosing the correct alternatives from those given in the brackets and rewrite the sentence in your answer-book. 1. An economic problem mainly arises due to scarcity of resources 2.

[1]

Goods and services are produced and supplied by Public Sector on the basis of ‘No Profit, No Loss’.

[1]

Q.6. Answer the following questions in one or two sentences each (any three): 1. Land, mountains, water, sunshine, sea, forests and mineral deposits are examples of Natural resources.

[2]

2.

i. ii.

Inflation is decline in purchasing power due to an increase in price. It is a state in which the value of money is falling i.e. prices are rising.

3.

i.

Cash Reserve Ratio or CRR refers to the proportion of total deposits which commercial banks have to keep with the central bank. An increase in cash reserve ratio results into lesser availability of credit through banks, which helps to control money supply.

ii. 4.

5.

The main objectives of the Public Distribution System are: i. To provide essential goods to the consumers at reasonable and subsidised prices. ii. To maintain the minimum nutritional status of the population. i. ii.

Public Distribution System helps to supply subsidised food grains to poor people. It provides employment to fair price shop owners, their employees and other related workers. iii. It also reduces poverty and economic inequality. Thus, Public Distribution System is beneficial in India. [Any two benefits : 1 mark each]

Q.7. Answer any one of the following questions in five or six sentences: 1. The following factors cause decrease in supply of goods and services: i. Shortage of Factors of Production: The shortage of factors like land, labour, capital, raw materials etc. reduces the production of goods and services. Hence, level of supply decreases. ii. Industrial Disputes: Industrial disputes result into strikes which may lead to lockouts. In such case, industrial production falls and there is reduction in the supply. iii. Natural Calamities: Natural calamities like flood, droughts etc., adversely affect the supply of farm products and raw materials, thereby affecting the supply of goods. iv. Lopsided Production: More production of comforts and luxury goods reduces the supply of essential goods in the market which causes inflation. v. Hoarding of Goods: a. Hoarding is done by suppliers to earn more profit. b. It reduces the supply of goods at a particular point of time and leads to inflation. c. Sometimes, consumers tend to hoard goods, expecting prices to rise in the near future. d. This creates a shortage of goods and services in the market. Hence, prices rise. [Any four causes : 1 mark each] 2.

6 6

The most common business malpractices followed by sellers are: i. Sale of adulterated goods. ii. Sale of defective goods. iii. Use of false weights and measures. iv. Hoarding and black-marketing. v. Charging more than the Maximum Retail Price (MRP). vi. Misleading advertisements. [Any four malpractices : 1 mark each]

[1] [1] [1] [1] [1] [1]

Geography and Economics

BOARD ANSWER PAPER : JULY 2015  GEOGRAPHY AND ECONOMICS Q.1. (A)

(B)

Q.2. (A)

Complete the following statements by choosing the appropriate alternatives from those given in the brackets and rewrite the sentence in your answer-book. 1. The Punjab and Haryana plain is the leading producer of wheat.

[1]

2.

The Chamba people lead a nomadic pastoral life in the upper Indus Valley.

[1]

3.

The Tarai is a marshy land.

[1]

Match the items in Column ‘A’ with those in Column ‘B’ 1. Goat c. Lohi 2. Bavadis a. Step wells 3. Harmandir Sahib b. The holiest of the Sikh shrines Give geographical reasons for the following statements (any two): 1. i. The process of segregating an area into smaller segments is called regionalization. ii. For e.g. Division of a nation into states and states into districts etc. iii. Regionalization is a base for economic development. It is necessary to have small regions to solve various problems. iv. Regionalization is very important for many historical, political, economical and sociological analysis. Hence, regionalization is very essential. 2.

i. ii. iii. iv.

(B)

Heavy rainfall results in leaching (filter) out of all soluble material of the top layer of soil. Due to the process of leaching, Iron oxide remains behind in the soil. This gives the soil dusty red colour. Such soils are formed in the eastern regions which receive heavy rainfall.

[1] [1] [1]

[½] [½] [½] [½]

[½] [½] [½] [½]

3.

i. The Himalayan rivers are fed by rains during the monsoon season. ii. They also receive water by the melting of snow during summer season. iii. These rivers are in their young stage. iv. For e.g. Ganga, Yamuna, Satluj, Indus, Brahmaputra, etc. Due to all these reasons, most of the Himalayan Rivers are perennial in nature i.e. they flow throughout the year.

[½] [½] [½] [½]

4.

i. ii. iii. iv.

[½] [½] [½]

The climate in the southern parts of the Western Ghats is humid. The southern parts of the Western Ghats have long duration rainy season. The long duration rainy season is well suited to crops like coffee, tea and spices. The soils in the southern part of the Western Ghats is laterite with high iron content. Thus, due to high rainfall, and fertile soil, plantation, agriculture is mainly confined to the southern parts of the Western Ghats.

Write short notes on (any two): 1. i. Rajasthan desert in India fascinates tourists by its world famous camel safari. ii. Jaisalmer, Bikaner and Jodhpur are three of historically popular cities for tourism. iii. This form of tourism provides income to many camel owners in Jaisalmer as well as a means of employment to camel trekkers in the nearby villages of the Rajasthan desert. iv. Both domestic and international tourists find great adventure in the camel trips of the Rajasthan desert.

[½]

[½] [½]

[½] [½]

1

Board Answer Paper : July 2015 2.

i. ii. iii. iv.

3.

i. ii. iii. iv.

Q.3. (A)

The narrow strip of land between the Arabian Sea and the Western Ghats is known as Konkan-Karwar Coast. The width of this strip ranges between 50 km and 100 km. It consists of full series of spurs that extend from the Western Ghats upto the coast line. The Konkan coast is more or less a rocky coast, where, the rocky headlands are separated by beaches of moderate to short length and estuaries of number of rivers originating along the western slopes of the Western Ghats. A number of coastal islands are seen along the Western Coast. Most of these are in the form of submerged rocky platforms (eg. St. Mary Islands) in Karwar.

[½] [½] [½] [½]

The Eastern Himalayas are also called Arunachal Himalayas. It stretches between the Tista and Brahmaputra rivers. It occupies Arunachal Pradesh state. The Eastern Himalayas have number of mountain passes. Jelep La in Sikkim and Bum La in Arunachal Pradesh are the main routes to the Tibetan capital Lhasa. Erosion is very active over these ranges due to heavy rainfall.

[½] [½] [½] [½]

Draw a simple bar graph by using the following data : Y

Scale: 1 cm = 4,000 Rupees Per Capita Income (2000 – 2005)

28,000

Per capita income (in rupees)

24,000 20,000 16,000 12,000 8,000 4,000

X

O

Y

2 2

2000-01

2001-02

2002-03 Years

2003-04

2004-05

X

[2]

Geography and Economics (B)

(C)

Observe the following map and answer the questions given below it (any two): 1. Doab lies between the rivers Ganga and Yamuna.

[1]

2.

River Gandak is a tributary of River Ganga.

[1]

3.

Bhabar Zone is found in north west direction of the Ganga plain.

[1]

4.

The Ganga Plain slopes down from West to East.

[1]

Mark the following in the outline map of India supplied to you. Write the names and give Index (any two): N

(2) 0

200 

400 km.

(1)

(3)

Index: (1)

Arunachal Pradesh

(2)

Highest Peak of India

(3)

The Western Ghats

(4)

Kanyakumari

(4)

[1 mark for each location]

3

Board Answer Paper : July 2015 Q.4. Answer the following questions in detail (any two): 1. i. Western Rajasthan faces acute water scarcity due to very low ground water level and lack of water resources such as rivers and canals. To overcome this problem, villagers are encouraged to build and renovate Kunds (tanks), Johads (ponds), Talabs (permanent ponds) and to dig wells. There are many ancient water harvesting systems being practiced in Rajasthan. ii. Kunds are structures which have been constructed to harvest rainwater for drinking purpose. iii. Traditional step wells are called bavadis in Rajasthan. iv. A khadin is an ingenious construction designed to harvest surface runoff water for agriculture. It is very long (100-300m) embankment built across the lower hill slopes lying below gravelly uplands. v. Tankas are small underground tanks found in most houses in Bikaner, either in the main house or in the courtyard for collecting rain water. They were circular holes made in the ground lined with lime. They were beautifully decorated with tiles which kept the water cool and was safe for drinking. vi. Kuis are deep pits (10-12 m) dug near tanks to collect seepage. They are also used to harvest rainwater in areas with less rainfall. They can hold water for a long time due to almost negligible water evaporation.

INDIA

[½] [½] [½] [½]

[½] [½]

N

Rajasthan Plain

Bay of Bengal Arabian Sea

Lakshadweep Indian Ocean

2.

i. ii. iii. iv. v. vi.

4 4

The Deccan Plateau has a rich variety of forests due to its varied topography and other physical features. Tropical moist deciduous, tropical dry deciduous and thorny scrubs are the three main types of forests found in this region. Teak, Sal, Sheesham, Sandalwood, Khair, Hirda and Arjun are some of the trees that are found in the Deccan Plateau. The Deccan Plateau is home to many mammals however, the larger species are rare. A variety of grazing animals from the Four-horned Antelope and blackbuck to the Gaur and Wild Buffalo are found in the Deccan Plateau. Tigers, Wild Dogs, Sloth Bear and other carnivores are also some important animals found in this region. The forest also houses 300 species of birds. Some endangered species of birds and animals are found in the Deccan Plateau. These include: Animals - Indian Giant Squirrel Birds - Jerdon’s Courser

[1]

[½] [½] [½] [½] [½]

[½]

Geography and Economics

INDIA

N

Deccan Plateau

Vindhya hills

Maharashtra Plateau

Lakshadweep

i. ii. iii. iv. v. vi.

Bay of Bengal

Satpura

Mahanadi Basin

Deccan plateau

Telangana Plateau Karnataka Plateau

Indian

Ocean

[1]

The Western Ghats have large reserves of mineral wealth, rich biodiversity and tremendous ecological value. Inspite of having such wealth of natural resources, the Western Ghats have a number of environmental problems. It is difficult to protect and maintain the faunal diversity in this region due to exploitation of natural resources. The Western coastal regions have high density of population. The level of human interventions goes on increasing with the increase in population pressure. The coastal ecosystems are considered to be fragile ecosystems, and hence any intervention is likely to lead to environmental problems.

INDIA Western Ghats and Western Coastal Plain

Western Ghats Gujarat A coast r a Western b Coast i a n s e a Indian Ocean Lakshadweep

3.

A r a b i a n S e a

[½] [½] [½] [½] [½] [½]

N

Bay of Bengal

[1]

5

Board Answer Paper : July 2015 Q.5. Fill in the blanks by choosing the correct alternatives from those given in the brackets and rewrite the sentence in your answer-book. 1. An optimum population indicates an ideal size of population. 2.

The tertiary sector is also known as service sector.

Q.6. Answer the following questions in one or two sentences each (any three): 1. i. The technique which involves the use of more labour and less machinery for the production of goods and services is called labour intensive technique of production. e.g. Handloom industry. ii. In India, labour intensive technique will be preferred due to abundant population. 2.

i. ii.

3.

i. ii.

4.

5.

Bank rate refers to the rate of interest at which a central bank lends money to commercial banks. An increase in bank rate raises other interest rates and discourages people to borrow money from various financial institutions. A process through which sub-standard ingredients are added to food items to increase its quantity is called food adulteration. Food adulteration adversely affects the health of the society.

The two main causes of inflation are: i. Increase in demand for goods and services. ii. Decrease in the supply of goods and services. The main objectives of Consumer Protection Act are: i. Providing better and all-round protection to consumers. ii. Making provision for a simple and speedy machinery for redressal of consumers grievances.

Q.7. Answer any one of the following questions in five or six sentences: 1. The following factors are responsible for increase in demand for goods and services: i. Increase in public and private expenditure: An increase in public expenditure due to war and developmental policies as well as increase in private expenditure leads to an increase in demand for goods and services in the economy. ii. Increase in Exports: a. An increase in export reduces the stock of commodities available for home consumption. b. It creates shortage of goods in the economy, so demand exceeds supply. iii. Reduction in Taxation: When taxes are reduced, there is an increase in the purchasing power of consumers. So, demand increases. iv. Rapid Growth of Population: A rapidly growing population, increases level of demand for goods and services in a country. v. Deficit Financing: a. Government meets the deficit by borrowing money from the public and Reserve Bank and also by printing currency. b. This increases money supply and therefore, demand and prices rise. vi. Availability of Credit: An easy availability of credit raises consumer’s expenditure, thereby increasing the demand for goods and services. All these factors increase inflationary pressure. [Any four factors: 1 mark each] 2. The duties of a consumer are:

6 6

[1] [1]

[1] [1] [1] [1] [1] [1] [1] [1] [1] [1]

Geography and Economics i. ii. iii. iv. v.

To be quality conscious and aware of his rights to restrict business malpractices. Beware of misleading advertisements. Insist the seller for a bill, receipt and guarantee or warrantee card. Compare the quality, price, durability, after sale service etc. of the product. Carefully inspect the variety of goods and make the best choice. [Any four duties : 1 mark each]

7

Geography and Economics

BOARD ANSWER PAPER : MARCH 2016  GEOGRAPHY AND ECONOMICS Q.1. (A)

(B)

Q.2. (A)

Complete the following statements by choosing the appropriate alternatives from those given in the brackets and rewrite the sentence in your answer-book. 1. Areawise, Rajasthan is the largest state. 2. Punjab and Haryana plain is the leading producer of wheat. 3. The highest peak in the Western Ghats is Anai mudi.

[1] [1] [1]

Match the items in Column ‘A’ with those in Column ‘B’ 1. Babul c. Best fodder 2. Varanasi a. Religious town 3. Mahabaleshwar b. Famous hill station

[1] [1] [1]

Give geographical reasons for the following statements (any two): 1. i. The process of segregating an area into smaller segments is called regionalization. ii. For e.g. Division of a nation into states and states into districts etc. iii. Regionalization is a base for economic development. It is necessary to have small regions to solve various problems. iv. Regionalization is very important for many historical, political, economical and sociological analysis. Hence, regionalization is very essential. 2.

i. The Himalayan rivers are fed by rains during the monsoon season. ii. They also receive water by the melting of snow during summer season. iii. These rivers are in their young stage. iv. For e.g. Ganga, Yamuna, Satluj, Indus, Brahmaputra, etc. Due to all these reasons, most of the Himalayan Rivers are perennial in nature i.e. they flow throughout the year.

3.

i. ii. iii. iv.

4.

i. ii.

(B)

The Rajasthan desert is a transition zone between the densely populated Ganga basins on the east and Indus on the west. Since the 7th century, there has been a trend of migration, invasion and exchanges of population from west to east. As a result of all these factors, the Rajasthan desert is the most densely populated desert in the world, with a density of about 83 persons per sq.km. The populated cities of Rajasthan include Jodhpur, Bikaner, Jaisalmer etc. Mining activities are well developed in the Chota Nagpur plateau because it is rich in minerals like mica, bauxite, copper, limestone, iron ore and coal. The Damodar valley is rich with coal deposits and it is considered as the prime centre of cooking coal in the country. The important coalfields are Jharia, Raniganj, West Bokaro, East Bokaro and Ramgarh.

Write short notes on (any two): 1. i. The Andaman-Nicobar group has some village handicrafts units. ii. There are shells and wood-based handicraft units in these islands. iii. Small-scale industrial units are engaged in a variety of activities, such as production of polythene bags, paints and varnish, shell crafts etc. iv. Tourism is a rapidly growing industry on these islands.

[½] [½] [½] [½] [½] [½] [½] [½]

[½] [½] [½] [½] [1]

[1] [½] [½] [½] [½]

1

Board Answer Paper : March 2016 2.

i.

The Ganga plain region is well developed economically due to agricultural activity. The Economic development further contributes to the well developed transportation in this region. Ganga plain has good railway network and is connected to major cities of India. Lucknow, Agra, Patna and Faizabad are the major railway junctions.

ii. iii.

3.

[½]

Many highways and major roads pass through this region. All major cities have facility of air transportation.

[½]

iv.

All parts of Ganga plain are very well connected to each other.

[½]

i.

The three states lying in the Western Himalayas are Jammu and Kashmir, Himachal Pradesh and Uttarakhand.

[½]

The three physical divisions of the Western Himalayas are Kashmir Himalayas, Himachal Himalayas and Kumaun Himalayas.

[½]

K2 is the highest peak in Western Himalayas and Nanga Parbat is the second highest peak in Western Himalaya.

[½]

River Jhelum is found to the south west of Western Himalayas.

[½]

ii. iii. iv. Q.3. (A)

[½]

Draw a simple bar graph by using the following data : Y

Scale: 1 cm = 10 crore people

Population of India

130 120 110

Population (in crores)

100 90 80 70 60 50 40 30 20 10

X

2 2

0

Y

1971

1981

1991 Years

2001

2011

X

[2]

Geography and Economics (B)

Observe the following map and answer the questions given below it (any two): 1.

The states in the Peninsular Plateau are Maharashtra, Telangana, Andhra Pradesh, Karnataka and Chhattisgarh.

[1]

2.

The western ghats and the eastern ghats are the ghats to the coasts.

[1]

3.

Brahmaputra plain lies in the state of Assam.

[1]

4.

Andaman and Nicobar Islands lie to the Bay of Bengal.

[1]

(C) Mark the following in the outline map of India supplied to you. Write the names and give Index (any two): N

(2) 0

200 

400 km.

(3)

(1)

(4)

Index: (1)

Tropic of Cancer

(2)

K-2

(3)

Amritsar

(4)

Chilka Lake

[1 mark for each location]

3

Board Answer Paper : March 2016 Q.4. Answer the following questions in detail (any two): 1. i. The Punjab and Haryana region is basically agricultural. However, some large scale industries including cotton and woollen textiles, fertilizers, light engineering goods, locomotive, paper, sugar etc. have been set up in this region. ii. Small scale industries like bicycle, sports goods, handloom, hosiery etc. are found in this region. The industries got a boost during post-independence period. iii. Financial assistance from the government, large amount of energy generated by the Bhakra-Nangal project and a good market for the consumer goods have paved the way for industrialization in this region. iv. Amritsar is specially known for textiles, machine tools and food processing industries. v. Jalandhar is the leading centre of sports goods. vi. Ambala is the largest manufacturer of scientific apparatuses. Hence, it is named as science city of Haryana.

[½] [½]

[½] [½] [½] [½]

INDIA

Amritsar Punjab

Punjab-Haryana Industrial city N Chandigarh Ambala Panipat

Hissar Haryana

Faridabad

A r a b i a n s e a

Lakshadweep

Bay of Bengal

Indian

Ocean

[1] 2.

i.

ii. iii. iv.

v. vi.

4 4

The Deccan Plateau has a rich variety of forests due to its varied topography and other physical features. Tropical moist deciduous, tropical dry deciduous and thorny scrubs are the three main types of forests found in this region. Teak, Sal, Sheesham, Sandalwood, Khair, Hirda and Arjun are some of the trees that are found in the Deccan Plateau. The Deccan Plateau is home to many mammals however, the larger species are rare. A variety of grazing animals from the Four-horned Antelope and blackbuck to the Gaur and Wild Buffalo are found in the Deccan Plateau. Tigers, Wild Dogs, Sloth Bear and other carnivores are also some important animals found in this region. The forest also houses 300 species of birds. Some endangered species of birds and animals are found in the Deccan Plateau. These include: Animals - Indian Giant Squirrel Birds - Jerdon’s Courser

[½] [½] [½]

[½] [½]

[½]

Geography and Economics INDIA

N

Deccan Plateau

Vindhya hills

Maharashtra A r Plateau

Bay of Bengal

Satpu

Mahanadi Basin

a Deccan plateau b i a n S Lakshadweepe a Indian

i.

ii.

iii.

Ocean

[1]

The Western Ghats have a number of hill stations that are frequented by large number of tourists. Some of the noteworthy hill stations in the Ghats are Saputara in Gujarat, Mahabaleshwar in Maharashtra, Kodaikanal in Tamil Nadu and Munnar in Kerala. Besides these hill stations, number of national parks and sanctuaries attract large number of tourists. Along the Western Coast, beaches like Srivardhan and Guhagar in Maharashtra, Kolwa and Calangute beach in Goa, Karwar beach in Karnataka and Kovalam beach in Kerala are quite famous tourist destinations. A large number of centres of cultural importance like places of worship and forts are also found here. eg. Raigad, Gokarna, Ganapatipule, Guruvayur etc.

INDIA

[1]

[1] [1]

N

Western Ghats and Western Coastal Plain

Gujarat Surat Dist. Mumbai Dist. Raigad Dist.

Maharashtra Thane Dist. Srivardhan

A Goa r Kalangut Karwar a Kolwa Karnataka b i Udagamandalam Kodaikanal a Munnar Tamil Nadu n Kerala Kovalam sea Ocean Indian

Bay of Bengal

Lakshadweep

3.

Telangana Plateau Karnataka Plateau

[1]

5

Board Answer Paper : March 2016 Q.5. Fill in the blanks by choosing the correct alternatives from those given in the brackets and rewrite the sentence in your answer-book. 1. Tertiary sector is also known as service sector. 2.

The main motive of producers is to maximize profit in capitalist economy.

Q.6. Answer the following questions in one or two sentences each (any three): 1. i. The problem of ‘for whom to produce’ is related to the distribution of production among people. ii. An economic problem mainly arises due to scarcity of resources. 2.

i. ii.

3.

i. ii.

4.

i. ii.

5.

[1]

[1] [1]

Cash Reserve Ratio or CRR refers to the proportion of total deposits which commercial banks have to keep with the central bank. An increase in cash reserve ratio results into lesser availability of credit through banks, which helps to control money supply.

[1]

Deficit financing is when the government meets the financial deficit by borrowing money from the public and Reserve Bank and also by printing currency, thereby increasing the supply of money is the economy. Due to this, demand and prices rise.

[1] [1]

A process through which sub-standard ingredients are added to food items to increase its quantity is called food adulteration. Food adulteration adversely affects the health of the society.

[1] [1]

The main objectives of the Public Distribution System are: i. To provide essential goods to the consumers at reasonable and subsidised prices. ii. To maintain the minimum nutritional status of the population.

Q.7. Answer any one of the following questions in five or six sentences: 1. According to the Consumer Protection Act (1986), the rights of consumers include: i. Right to Safety: a. The consumer should be protected against goods and services which are hazardous to health. b. For example, protection from defective vehicles, inferior electrical appliances, harmful pesticides etc. ii. Right to be Informed: The consumer must be provided with accurate information about quality, purity, price, quantity and the standard of goods and services. iii. Right to Choose: Consumers have the right to make a choice from variety of goods and services as per their purchasing power and preferences. iv. Right to be Heard: Consumers have the right to be heard by manufacturers and dealers about their opinions on production. v. Right to seek Redressal: a. The consumers have the right to seek redressal of their grievances related to price and quality of goods and services. b. The product must be repaired or replaced by the seller or manufacturer, if required. c. The Consumer’s Redressal Agencies include the District Forum, the State Commission and the National Commission. vi. Right to Consumer Education: The consumer must know about the relevant laws to prevent unfair trade practices and to follow the procedure while making complaint. vii. Right to Clean Environment: a. Everyone has the right to enjoy pollution free environment. b. The consumer has right to lodge a complaint and seek its redressal if anybody creates pollution by means of garbage, air, water and noise. [Any four rights : 1 mark each] 2. The following factors cause decrease in supply of goods and services:

6 6

[1]

[1]

[1] [1]

Geography and Economics i. ii. iii. iv. v.

Shortage of Factors of Production: The shortage of factors like land, labour, capital, raw materials etc. reduces the production of goods and services. Hence, level of supply decreases. Industrial Disputes: Industrial disputes result into strikes which may lead to lockouts. In such case, industrial production falls and there is reduction in the supply. Natural Calamities: Natural calamities like flood, droughts etc., adversely affect the supply of farm products and raw materials. Lopsided Production: More production of comforts and luxury goods reduces the supply of essential goods in the market which causes inflation. Hoarding of Goods: a. Hoarding is done by suppliers to earn more profit. b. It reduces the supply of goods at a particular point of time and leads to inflation. c. Sometimes, consumers tend to hoard goods, expecting prices to rise in the near future. d. This creates a shortage of goods and services in the market. Hence prices rise. [Any four factors : 1 mark each]

7

Science and Technology

BOARD ANSWER PAPER : MARCH 2015  SCIENCE AND TECHNOLOGY SECTION A 1.

(A)

(a)

(b)

Rewrite the following statements with suitable words in the blanks: i. The device used for producing electric current is called a generator. ii. Stratosphere, the second layer of the atmosphere reaches 48 km above the earth’s surface.

2.

Column A eosin oxidation

2 1

Column B synthetic indicator losing hydrogen

 

(c)

(B)

Rewrite the following statements by selecting the correct options: i. (C) When phenolphthalein is added to NaOH, the colour of the solution will become pink. ii.

[1]

Rewrite the following table so as to match the second column with the first column:  i. ii.

 

[1]

CaOCl2

(D)

[1] [1] [1] 

[1]

If the potential difference across the ends of a conductor is 220 V and the resistance of the conductor is 44  (ohm), then the current flowing through is 5 A.

[1]

iii.

(B)

1 A = 103 mA

[1]

iv.

(B)

The distance between principal focus and optical centre of the lens is focal length.

[1]

v.

(B)

When rays of light are incident on a glass slab, then the incident ray and emergent ray are parallel to each other.

[1]

Answer any five of the following: i. a. Scattering of light depends upon the particle size and wavelength of the incident light. b. In the visible range of light, red light has greater wavelength. c. Red light can travel larger distance without getting scattered. d. This enables viewer to spot red colour distinctly even from a distance. Hence, danger signals are red in colour.

[½] [½] [½] [½]

ii.

[2]

CuO + 2HCl  CuCl2 + H2O Copper chloride

iii. iv.



Water

Newlands’ Octaves law states that “When the elements are arranged in an increasing order of their atomic masses, the properties of the eighth element are similar to the first.”

[2]

1 = 3  108 m/s 2 = 1.5  108 m/s To find: 12  Formula: 12 = 1 2 From Formula, 3108  = =2 1 2 1.5108

[1]

The refractive index of the medium with respect to air is 2.

[1]

Given:

1

Board Answer Paper : March 2015 v. a. b. c. d.

Resistances in series The voltage across each resistor is different. The current through each resistor is the same. This combination is used to increase the effective resistance of the circuit. This combination decreases the current in the circuit.

Resistances in parallel The voltage across each resistor is same. The current in various resistors are inversely proportional to the resistances. This combination is used to decrease the effective resistance of the circuit. This combination increases the current in the circuit.

[2]

vi. A B1

C

B F

P

A1

Object (AB) between centre of curvature and focus Image (A1B1) beyond centre of curvature, real, inverted and magnified. 3.

Answer any five of the following: i. The role of citizen in pollution control: a. Citizens should plant trees and develop gardens, parks and open grounds in the locality. b. Citizens should save fossil fuels and reduce pollution. c. They should minimize electricity consumption. d. They should use public transport instead of private vehicles. e. Citizens should use non-conventional source of energy like solar, wind energy, tidal energy. f. They should maintain vehicles in well tuned condition. g. Citizens should keep home and public places clean and should keep their own locality free from pollution. [Any six points: ½ mark each]

[3]

ii.

[1]

iii.

a. b.

The band of coloured components of a light beam is called as spectrum. White light is composed of seven colours. When white light is incident a prism, it splits up into its constituent colours. c. Each colour bends through different angles with respect to incident ray. So the rays of each colour emerge along different path and become distinct. Hence, we get a spectrum of seven colours when white light is dispersed by a prism.

a. b.

iv.

a.

The four most common electrical appliances based on heating effect of electric current are electric iron, electric heater, electric toaster and electric oven. Finely heated platinum wire is used in surgery for cutting tissues much more efficiently than a knife. Gypsum is obtained on mixing Plaster of Paris with water. 2CaSO4.H2O + 3H2O  2CaSO4.2H2O + Heat. Plaster of Paris

b. c. 2 2

[2]

Water

[1] [1]

[2] [1]

[1]

Gypsum

Gypsum is used as a raw material in manufacturing cement. POP is used in making statues and decorating roofs. It is also used in surgical bandages.

[1] [1]

Science and Technology v. Metals Mg, Hg

vi.

a.

b.

Non-metals C, S

12  + 2.5  + 2.5  4 4

c.

Metalloids Si, As

2

[3]

[1]

= 17 =

[1] 2

2 =

[1] 3

4.

2 Attempt any one of the following: (A) a. Short circuiting takes place if a live wire and a neutral wire come in direct contact or touch each other. b. During a short circuit, the resistance of the circuit becomes very small. c. A huge amount of current flows through the circuit during a short circuit. d. The flow of a large amount of current in the circuit beyond the permissible value (of current) is called overloading. It may cause fire. e. The effects of overloading can be avoided by not connecting many appliances (especially of high power rating) at a time in the circuit. (B)

a. b. c. d. e.

Negative power indicates that 8 students use spectacles having concave lens. Positive power indicates that 2 students use spectacles having convex lens. Generally, most of the students use the spectacles having concave lenses of suitable focal length. Most of the students suffer from myopia or near-sightedness. Two possible reasons for myopia: 1. The ciliary muscles are unable to relax sufficiently. 2. Increase in the distance between eye lens and retina due to lengthening of eyeball or curved lens.

[1] [1] [1] [1] [1] [1] [1] [1] [1] [½] [½]

SECTION B 5.

(A)

(a)

(b)

(B)

6.

Find the correlation in the given pair and rewrite the answer: i. Tinning : Tin :: Galvanizing : Zinc. ii. Mammals : Reptiles :: Amphibia : Fishes.

[1] [1]

State True or False: i. True ii. False iii. True

[1] [1] [1]

Rewrite the following statements by selecting the correct options: i. (A) The molecular formula of acetic acid is CH3COOH. ii. (C) Carbon dioxide enters into the leaves through tiny pores present on the surface of the leaf called stomata. iii. (A) CuSO4 solution is blue in colour. iv. (D) Yeast reproduces by budding. v. (B) Raisins put in water absorb water by the process of osmosis.

Solve any five of the following: i. a. Common salt is an ionic compound having strong force of attraction between the oppositely charged Na+ and Cl ions. b. So, a large amount of heat energy is required to break these forces of attraction and to melt or boil the common salt. Thus, common salt has high melting point and boiling point.

[1] [1] [1] [1] [1]

[1] [1]

3

Board Answer Paper : March 2015 ii.

The pancreas with their associated structures: Gall bladder Stomach [2]

Bile duct Common duct Pancreatic duct

iii.

a. b.

iv.

Pancreas

Connecting link between Peripatus and Annelida: Segmental nephridia, thin cuticle and parapodia like appendages. Connecting link between Peripatus and Arthropoda: Trachea and open circulation.

Two plant hormones and their functions: a. Gibberellins: Help in growth of stem b. Cytokinins: Promote cell division

[1] [1]

[1] [1]

v. i. ii. iii.

Toilet soap High quality of fats and oils are used as raw materials. Expensive perfumes are added. Toilet soaps do not contain free alkalies which are harmful to skin.

Laundry soap Cheaper quality of fats and oils are used as raw materials. Cheaper perfumes are added. Laundry soaps contain free alkalies which contribute towards its cleaning action. [Any two points :1 mark each]

vi.

7.

4 4

Objectives of sustainable development are : a. Reduce pollution by using eco-friendly technology. b. Restrain the use of natural resources to ensure availability for the future generation. c. Protection of environment. d. Social equality in accessing resources. e. Continuous economic growth. [Any four points :½ mark each]

Answer any five of the following: i. Alloy: a. An alloy is a homogenous mixture of two or more metals or a metal and a non-metal in definite proportion. b. Alloys do not corrode easily. Example: a. Brass (copper and zinc) b. Bronze (copper and tin) Cells that assist the neuron in their function  Neuroglia The small gap between the consecutive neurons  Synapse Part of the brain that co-ordinates the voluntary functions  Forebrain (Cerebrum)

ii.

a. b. c.

iii.

Fertilization: a. During the process of fertilization, sperms enter through the vaginal passage, travel upwards and reach the oviduct. b. In oviduct, one of the sperm fuses with egg and the fertilization is completed. Development: a. After fertilization, the egg cell (zygote) begins to divide and redivide to form a ball of cells called a blastocyst. b. This blastocyst implants itself in the wall of the uterus.

[2]

[2]

[1] [1] [1] [1] [1] [1]

[1]

Science and Technology c.

The embryo develops inside the uterus. It obtains all the nutrients and oxygen from its mother’s blood through the umbilical cord. d. Development of the foetus takes place for nine months. Birth: a. Nine months onwards, the baby is ready to take birth. It begins to move down towards the vaginal passage. b. During birth, the cervix gradually opens and the baby is released through the vagina. iv.

v.

Vestigial organs: Vestigial organs are the non-functional organs in some organisms but have essential functions in other organisms. Examples of vestigial organs in human beings: Vermiform appendix, wisdom teeth. Examples of vestigial organs in plants: Scale like leaves on Indian pipe plant, Stamens which lack anthers in some flowers. a. b. c.

vi.

8.

a. b.

Recycling is a type of green technology that uses old material to make new products. Many waste products from the industries such as paper, glass, plastics and metals can be recycled. Example: Old used tyres are recycled to create play ground flooring in parks to provide soft surfaces that increase the safety of the children playing there. Advantages of recycling: 1. It conserves energy and raw materials. 2. It saves space used in landfills. 3. It protects environment by effective handling of waste materials. 4. It reduces the cost of production. [Any two points:½ mark each]

[1]

[1]

[1] [1] [1] [1] [1]

[1]

Sexual reproduction gives rise to variation. Importance of variation in survival of species: Variations give rise to variety and diversity. They enable organisms to adapt and survive in the changing environmental conditions. Variations also help to prevent the complete extinction of plant and animal species.

[1]

[2]

(A)

i. ii. iii. iv. v.

Anaerobic reaction = CO2 + Ethanol Reaction in human muscles = Lactic acid Aerobic respiration = CO2 + H2O Reaction in plant cells = Starch Reaction in liver = Glycogen

[1] [1] [1] [1] [1]

(B)

i. ii.

The other two names of ethanol: Ethyl alcohol, Spirit. The structural formula of ethanol:

[1]

H

iii.

iv.

H

H

C

C

OH

H H Properties of ethanol: i. It is a colourless liquid. ii. It is combustible and burns with a blue flame. Action of phosphorus trichloride on ethanol: When ethanol reacts with phosphorus trichloride (PCl3), it forms ethyl chloride and phosphorus acid. 3C2H5OH + PCl3  3C2H5Cl + H3PO3 Ethanol

Phosphorus trichloride

Ethyl chloride

Phosphorus acid

[1]

[1]

[2]

5

Science and Technology

BOARD ANSWER PAPER : JULY 2015  SCIENCE AND TECHNOLOGY  SECTION A 1.

(A)

(a) i. ii

Fill in the blanks: Very fine particles mainly scatter blue light. 1 mA = 103 A.

(b)

Match the column ‘A’ with column ‘B’: i. ii. iii.

(B) i. ii. iii. iv. v. 2.

2. 3. 1.

Column ‘B’ Scandium Gallium Germanium

Choose the correct alternative and rewrite the following: Mirror used by a dental surgeon is concave. (D) If the potential difference across it is doubled and the resistance is halved, current passing through a resistance becomes four times. (B) If three equal resistances are given, they can be arranged in four combinations. (B) Inside water, an air bubble behaves always like a concave lens. (D) A glass slab is placed in the path of convergent light. The point of convergence of light undergoes lateral shift.

Answer the following questions (any five): i. Dobereiner’s triads: i. In 1829, Dobereiner classified existing elements in a tabular form by placing three elements having similar properties in a group called triad. ii. In each triad, the elements were placed according to increasing order of their atomic masses. iii. The atomic mass of the middle element in each triad was approximately the mean of the atomic masses of other two elements. Eg. In the triad of Lithium, Sodium and Potassium, the atomic mass of Sodium (23) is the mean of atomic masses of Lithium (6.9) and Potassium (39). ii.

iii.



Column ‘A’ Eka-boron Eka-Aluminium Eka-Silicon

When edible oil is stored in an iron or tin container for a long time, it undergoes oxidation reaction. b. Due to oxidation reaction, the taste and smell of edible oil changes and it becomes rancid, if food is cooked in this oil, its taste changes. Hence, edible oil is not allowed to stand for a long time in an iron or tin container.

[1] [1]

[1] [1] [1] [1] [1] [1] [1] [1]

[½] [½] [½] [½]

a.

Power (P) = 750 W Time (t) = 2 hrs / day Number of days (n) = 30 To find: Energy consumed = ? Formula: Energy consumed = P  t  n Solution: From formula, Energy consumed = 750  2  30 = 45000 W h = 45 kWh Energy consumed = 45 kWh

[1]

[1]

Given:

[1]

[1]

1

Board Answer Paper : July 2015 iv. i. ii. iii.

Conductors Substances having very low resistance are called conductors. They allow charges to flow freely.

iv.

They contain large number of free electrons. Generally, conductors are metals.

Eg.

Copper, silver, gold, iron etc.

Insulators Substances having infinite resistance are called insulators. They do not allow the charges to flow. They contain practically no free electrons. Generally, insulators are non metals. Rubber, plastic, glass, ebonite etc. [Any two points: 1 mark each] [2]

v.

Uses of sodium carbonate (washing soda): a. Washing soda is used in washing clothes as a cleansing agent. b. It is very useful in manufacturing detergent powder, paper and glass. c. It is also used to refine petroleum. d. It plays an important role in making the water soft and potable.

[½] [½] [½] [½]

vi. Screen

Dispersion of light 3.

Answer the following questions (any five): i. a. Silver chloride (AgCl) b. Double displacement reaction. c. AgNO3(aq) + NaCl(aq)  AgCl(s)  + NaNO3(aq) Silver nitrate Sodium chloride

ii.

a. b. c.

iii.

iv.

2 2

Diagram: Labels:

[1] [1] [1] [1] [1]

Silver chloride Sodium nitrate

When two or more substances combine to form a single product, then the chemical reaction is known as combination reaction. The chemical reaction which is accompanied by absorption of heat is called endothermic reaction. The chemical reaction in which reactants gain oxygen atom or lose hydrogen atom to form products is known as oxidation reaction.

Concave mirrors are used: a. in torches and headlights. b. in flood lights. c. as reflecting mirrors for projector. d. to collect heat radiations in solar devices. e. in shaving mirror, dentist’s mirror. f. in solar furnaces. The domestic appliances based on heating effect of electric current are: a. Electric iron b. Electric heater c. Electric toaster d. Electric oven e. Electric kettle f. Electric bulb

[1] [1] [1] [½] [½] [½] [½] [½] [½] [½] [½] [½] [½] [½] [½]

Science and Technology v.

Formation of rainbow: a. The beautiful phenomenon of the rainbow is a combination of different phenomena like dispersion, refraction and reflection of light. b. The rainbow appears in the sky after a rain shower. When sunlight enters the water droplets present in the atmosphere, water droplets act as small prism. c. These drops refract and disperse the incident sunlight. d. This dispersed light gets reflected inside the droplet and again is refracted. As a collective effect of all these phenomena, the seven coloured rainbow is observed as shown in figure. Rain drop Sunlight

Red

a. b. c.

[½] [½] [½]

Violet

[1]

Formation of rainbow

vi.

[½]

A convex lens forms real, diminished and inverted image when an object is placed beyond 2F1. The image is formed between F2 and 2F2. The formation of image is as shown in the figure. L A

[1] [1]

F2 B1 2F2 B

2F1

F1

O A1

Object (AB) beyond 2F1 Image (A1B1) between F2 and 2F2, Diminished, real and inverted. 4.

[1]

Answer the following question (any one): i. a. B C N

S A B1

Iron core Armature coil

D Slip rings

R1

R2

B2

Axle

G

Electric AC generator b.

c.

Principle of electric generator: Electric generator works on the principle of electromagnetic induction. When the coil of electric generator rotates in a magnetic field, magnetic field induces a current in this coil. This induced current then flows into circuit connected to the coil. Function of slip rings: The ends of armature coil are connected to two slip rings. Slip rings rotate along with the armature coil.

[2]

[1] [1]

3

Board Answer Paper : July 2015 d. 1. 2. ii.

Any two uses of a generator: Generators are used in cinema halls, office buildings, hospitals, etc to provide electricity in case of power failure in the city. Generators provide backup electrical power to household appliances such as refrigerators, water heaters, etc.

Sources of noise pollution: a. Industrial activity b. construction activity c. generator sets d. loud speakers e. public address systems f. music systems g. vehicular horns h. other mechanical devices, etc.

[½]

[Any six sources : ½ mark each] [3]

Impact of noise pollution on human body: i. Impact of noise pollution on human beings depends on the noise intensity, frequency and exposure duration. ii. Noise pollution can cause auditory fatigue and deafness. iii. It can cause communication interference, sleep interference, concentration interference, ill temper, annoyance, violent behaviour, mental disorientation, bickering and loss of working efficiency. iv. Noise pollution can cause physiological effects such as nausea, fatigue, anxiety, visual disturbances, insomnia, hypertension, cardio vascular disease.

4 4

[½]

[½] [½] [½] [½]

Science and Technology

BOARD ANSWER PAPER : JULY 2015  SCIENCE AND TECHNOLOGY  SECTION B 1.

(A)

(a) i. ii. (b) (c)

Fill in the blanks: Chlorine is a greenish coloured poisonous gas. Compounds with identical molecular formula but different structures, are called isomers. Name the following: Neuroglia

iii. iv. v. 2.

[1]

Column ‘I’ Inhibits plant growth Cytokinins Cellular respiration Bile

5. 4. 3. 1.

Column ‘II’ Abscisic acid Promote cell division Mitochondria Breaks large fat globules into smaller ones

Choose the correct alternative and rewrite the following: Oxygen is released in plants during the process of photosynthesis. To observe the hydra bud clearly, Raju should see it first under the low power lens and then under the high power lens in order to see all of the above. Reaction of iron nails with copper sulphate solution is an example of displacement reaction. CuSO4 is blue in colour. Acetic acid turns blue litmus red.

Answer the following questions (any five): i. a. When a piece of calcium is placed in water, initially it sinks in water as its density is greater than that of water. b. Calcium reacts with water less vigorously to form calcium hydroxide and hydrogen gas. Ca(s) + 2H2O(l)  Ca(OH)2(aq) + H2(g) Calcium

c. d.

[1]

Match the following: i. ii. iii. iv.

(B) i. ii.

[1]

Water

Calcium

Hydrogen hydroxide

Since sufficient heat is not evolved during the reaction, hydrogen does not catch fire. Instead, calcium starts floating because the bubbles of hydrogen gas formed stick to the surface of calcium metal. Hence, calcium floats over water during its reaction with water.

[½] [½] [½] [½] [1] [1] [1] [1] [1]

[½]

[½] [½] [½]

ii. i. ii. iii.

Toilet soap High quality of fats and oils are used as raw materials. Expensive perfumes are added. Toilet soaps do not contain free alkalies which are harmful to skin.

Laundry soap Cheaper quality of fats and oils are used as raw materials. Cheaper perfumes are added. Laundry soaps contain free alkalies which contribute towards its cleaning action. [Any two points: 1 mark each] [2]

iii.

a. b.

There is no definite excretory system or organs present in plants for the removal of excretory products. Gaseous excretory materials are eliminated by diffusion. Many waste products are stored in the vacuoles of leaves, flowers, fruits and bark which fall off later on. Whereas other waste products are stored as resins and gum in old xylem.

[½] [½]

1

Board Answer Paper : July 2015 c. d.

Plants also excrete some waste substances into the soil around them. In some plants, waste is in the form of calcium oxalate crystals called raphides. Rubber, latex, gum, resins and essential oils like eucalyptus or sandalwood oil are plant wastes useful to human beings.

iv.

[½] [½]

Dendrites Cyton (cell body) Nucleus

Axon

Diagram: Any two labels:

Neuron v.

a. b. c. d.

vi.

a. b.

3.

Regeneration is the process of asexual division in some multicellular organisms, through which they can reconstruct the entire body from the isolated body cells. Regeneration is carried out by specialised regenerative cells. These cells proliferate and make large number of cells. These later develop into various cell types and tissues and help in the production of new organisms. The capacity to regenerate is very high among some animals. In Planaria, when the body is cut into many pieces, each piece develops into a whole new organism. Organisms which are structurally intermediate between two different groups are called ‘Connecting Links.’ Example: Peripatus is considered as a connecting link between Annelida and Arthropoda.

Answer the following questions (any five): i. Mechanism of Mendel’s monohybrid cross: a. Monohybrid cross involves crossing of two plants with one pair of contrasting characters. Mendel selected dominant red flowered (RR) and recessive white flowered (rr) pea plants as parents for crossing. b. After crossing of the parents, Mendel obtained the F1 generation, which possessed red coloured flowers, but they were different from red-flowered plants of parental generation, because these plants outwardly showed the same characteristics (i.e. red flowers) but were genetically different. This happened because the F1 generation also contained white recessive coloured factors. c. From this, Mendel concluded that red was dominant over white and the F1 generation was ‘phenotypically’ red and ‘genotypically’ a hybrid of red and white. Pure red  Pure white flowers …P1 generation RR

rr





R

r Rr

Plants with red flowers

2 2

[1] [1] [½] [½] [½] [½] [1] [1]

[½]

[½] [½]

…Gametes …F1 generation

[½]

Science and Technology d. e.

The F1 generation red flowered plant possess Rr genotype and thus, produces two types of gametes ‘R’ and ‘r’. The F1 plants were allowed to self-pollinate to produce second filial generation. (F2 generation). The F2 generation can be represented in Punnett square as: R RR Homozygous red Rr Heterozygous red

R r



f.

r Rr Heterozygous red rr Homozygous white

From F2 generation, Mendel observed that the phenotypic ratio of the offsprings was approximately 3 red (dominant):1 white (recessive), whereas the genotypic ratio was 1 dominant (RR):2 hybrid (Rr):1 recessive (rr), which is based on genetic constitution.

[½]

[½]

ii. XY

Parents:

Gametes:

Children:

X

XX

[1]

XX

Y

XX

X

X

XY

XY

[1]

Boy Girl Sex determination in human beings

iii.

a.

b. 1.

2. iv.

a. b. c.

Seismonastic movement: The movement of plant part in response to the stimulus of touch is called as seismonastic movement. Type of movements in plants: Growth dependent movement: e.g. movement of root system of plants in response to the stimulus of water and gravity i.e. hydrotropic and gravitropic movements respectively. Growth independent movement: e.g. Opening of lotus petals in the morning and tuberose at night. Metal A is more reactive than B as it has to lose only one electron from the outermost orbit while metal B has to lose two electrons to get stable electronic configuration. Metal A with electronic configuration of 2, 8, 1 is sodium (Na). Metal B with electronic configuration of 2, 8, 2 is Magnesium (Mg). Magnesium reacts with dil. HCl to form magnesium chloride and hydrogen gas. Mg(s) + 2HCl(aq)  MgCl2(aq) + H2(g)  Magnesium

v.

Hydrochloric acid

Magnesium chloride

Hydrogen

Allotropes are two or more forms of same element that differ from each other in their physical properties but have same or similar chemical properties. b. Two allotropic forms of carbon: Diamond and graphite Uses of diamond: a. Diamonds are used as precious stones in jewellery. b. Black diamonds are used for cutting glass. [Any one use: ½ mark]

[1]

[1]

[1] [1] [1] [1]

[1]

a.

[1] [1]

3

Board Answer Paper : July 2015 Uses of graphite: a. Graphite is used in making carbon electrodes. b. It is used as lubricants and in lead pencils. [Any one use: ½ mark] vi.

i. ii. iii.

4.

Answer the following question (any one): i. a. The organs of the human male reproductive system: 1. Testes 2. Epididymis 3. Vas deferens 4. Seminal vesicle 5. Prostate gland 6. Penis. b. Functions: 1. Testes: Testes produce sperms. They secrete hormone testosterone, which brings about changes in boys during puberty. 2. Epididymis: Sperms are stored and matured in the epididymis. 3. Vas deferens: It is a passage through which the sperms travel towards the urethra. 4. Seminal vesicles and prostate gland: They produce ejaculatory fluid which helps the sperm in transport and provides nutrition. 5. Penis: It delivers the sperms to the site of fertilization. [Write function of any two organs: 1 mark each] ii.

4 4

Green plants synthesize their food by the process of photosynthesis. The factors which take part in this process are carbon dioxide, water, chlorophyll and sunlight. Chemical equation of photosynthesis: Chlorophyll  C6H12O6 + 6O2 6CO2 + 6H2O  Sunlight

The functions of the Maharashtra Pollution Control Board: i. MPCB plans comprehensive programmes for the prevention, control or abatement of pollution. ii. MPCB inspects sewage or trade effluent treatment and disposal facilities. iii. MPCB supports and encourages the developments in the fields of pollution control, waste recycle reuse, eco-friendly practices, etc. iv. It educates and guides the entrepreneurs in improving environment by suggesting appropriate pollution control technologies and techniques. v. It creates public awareness about the clean and healthy environment and considers the public complaints regarding pollution.

[1] [1] [1]

[½] [½] [½] [½] [½] [½]

[2]

[1] [1] [1] [1] [1]

Science and Technology

BOARD ANSWER PAPER : MARCH 2016  SCIENCE AND TECHNOLOGY  SECTION A 1.

(A)

(B) i.

Fill in the blanks: The modern periodic table consists of seven periods.

[1]

ii.

The formulae of chloride of metal M is MCl2. The metal M belongs to 2nd or II A

[1]

iii.

Corrosion can be prevented by using anti rust solution.

[1]

(b) i.

Find the odd one out: Thermometer: Others work on magnetic effect of electric current.

[1]

ii.

Bar magnet: Others are appliances which work on magnetic effect of electric current.

[1]

Choose the correct alternative and rewrite the following: (C) Reaction of iron nails with copper sulphate solution is an example of Displacement reaction.

[1]

ii.

(A)

Dilute NaOH can be tested with red litmus paper.

[1]

iii.

(B)

In series combination current remains constant.

[1]

iv.

(D)

An object of 10 cm is placed in front of a plane mirror. The height of image will be 10 cm .

[1]

When a ray of light travels from air to glass slab and strikes the surface of separation at 90, then it passes unbent.

[1]

v. 2.

(a) i.

(C)

Answer the following questions (any five): i. a. The potential difference between two points is said to be 1 volt if 1 joule of work is done in moving 1 coulomb of electric charge from one point to another. 1 volt = b. ii.

1 joule 1coulomb

Electric power is defined as the rate at which electrical energy is consumed.

The major harm done to human beings by air pollution are: a. Short term effects of air pollution on human beings: 1. Irritation of eyes, nose, mouth and throat. 2. Respiratory infections such as bronchitis, pneumonia. 3. Headache, nausea and allergy 4. Asthma attacks 5. Reduced lung functioning. b.

Long term effects of air pollution on human beings: 1. Chronic pulmonary disease 2. Cardio vascular disease 3. Lung cancer 4. Premature death

[1] [1]

[1]

[1]

1

Board Answer Paper : March 2016 iii.

Power of lens = + 2 D P=

1 f

[1]

1 P 1 f = = 0.5 m = 50 cm 2

f=



Focal length of the lens = 50 cm.

[1]

iv.

Applications of Sodium bicarbonate (baking soda): a. Sodium bicarbonate is used to prepare light and spongy breads, cakes and dhokalas. b. It also helps to reduce acidity in stomach. c. It is very useful in preparing CO2 gas and is one of the contents of fire extinguishers. [Any two: 1 mark each]

[2]

v.

a.

When an object is placed within the focal length of convex lens, one gets a magnified and erect image of the object. b. Thus, the watch repairer can see the minute parts of the watch more clearly with the help of simple microscope than the naked eye, without any strain on the eye. A magnification of about 20 times is obtained by simple microscope. Hence, the watch repairers make use of simple microscope while repairing watches.

[1] [1]

vi. NEUTRAL 0

3.

ACIDIC

BASIC 7 pH scale

14

Answer the following questions (any five): i. Features of Mendeleev’s periodic table: a. The horizontal rows in the periodic table are called periods. There are seven periods numbered from 1 to 7. b. Properties of elements in a particular period show regular gradation from left to right. c. Vertical columns in the periodic table are called groups. There are eight groups numbered from I to VIII. Groups I to VII are further divided into A and B subgroups. ii.

Redox reactions: Redox reaction is a chemical reaction in which both oxidation and reduction take place simultaneously. Eg.

[2]

[1] [1] [1]

[1]

Reduction (loss of oxygen)

BaSO4 + 4C  BaS + 4CO Oxidation (gain of oxygen) In the above example, BaSO4 is reduced to BaS by removing oxygen atom and carbon is oxidized to carbon monoxide. iii.

2 2

Defect of human eye shown in the figure is hypermetropia. In this defect person can see distant objects clearly but cannot see nearby object clearly. b. Reason for hypermetropia: 1. Weak action of ciliary muscles cause low converging power of eye lens. 2. The distance between the eye lens and the retina decreases on account of either shortening of eye ball or flattening of lens. In this case focal length of eye lens is too long. Correction: i. Hypermetropia can be corrected by using spectacles having convex lenses of suitable focal length.

[1] [1]

a.

[1]

[1]

Science and Technology ii.

The convex lens produces convergence of the light rays passing through it and then light rays are converged by eye lens. As a result the image of the nearby object is formed on the retina. L1 L Image at retina O O Remedy of hypermetropia

iv.

Refraction of light: The phenomenon of change in the direction of light when it passes from one transparent medium to another is called refraction of light. Relationship between refraction of light and refractive index: a. The extent of change in the direction of light ray is different for different media and depends upon the relative speed of propagation of light in different media. The relative speed of propagation of light is basically measured with the help of refractive index of medium. b. The refractive index (12) of second medium with respect to the first is given by the ratio of the magnitude of velocity of light in first medium to that in second medium, i.e., 12 =

v.

vi.

[1]

[1]

velocityof light in medium first . velocity of light in mediumsecond

Thus, the refraction of light depends upon refractive index of the material.

[1]

a. b.

[1]

The band of coloured components of a light beam is called as spectrum. White light is composed of seven colours. When white light is incident a prism, it splits up into its constituent colours. c. Each colour bends through different angles with respect to incident ray. So the rays of each colour emerge along different path and become distinct. Hence, we get a spectrum of seven colours when white light is dispersed by a prism. a.

1. 2.

b.

1. 2. 3. 4.

c.

1. 2. 3.

4.

[1]

Use sound proof tiles on walls of classroom or curtains to avoid spread of noise pollution. Teacher should engage students in interesting activities during free time due to which students will not make noise. Purchase energy efficient products and operate them efficiently. Use daylighting in your home by using energy efficient windows. Use solar water heater rather than electric water heater. Turn off lights, fans, air conditioners, T.V., Computers etc. when not in use. [Any two points: ½ mark each] Bursting of fire crackers near silence zones such as near hospitals and schools must be avoided. Fire crackers should be avoided. Fire crackers which do not produce loud sound and cause less pollution must be preferred. [Any two points: ½ mark each]

Answer the following question (any one): i. Expression for equivalent resistance in series: +  V I C D R1 R2 R3  A +

[1] [1]

[½] [½]

[1]

[1] [5]

+  E K Resistors in series combination

[1]

3

Board Answer Paper : March 2016 a.

 

ii.

Let R1, R2 and R3 be the three resistors connected in series between points C and D as shown in the circuit diagram. b. An electric circuit is completed by connecting an ammeter (A), a voltmeter (V) a plug key (K) and a battery (E). c. Suppose I is the current and V is the P.D. across points C and D. d. Suppose V1, V2 and V3 are the P.D.s across resistors R1, R2 and R3 respectively, such that ….(1) V = V1 + V2 + V3 e. If Rs is the equivalent resistance, then using Ohm’s law, V = IRs and V1 = IR1; V2 = IR2; V3 = IR3 Substituting the values in equation (1) we get, IRs = IR1 + IR2 + IR3 IRs = I(R1 + R2 + R3) ….(2) Rs = R1 + R2 + R3 Equation (2) represents equivalent resistance in series combination of resistors. For ‘n’ number of resistors connected in series, Rs = R1 + R2 + R3 + … + Rn Characteristics of series combination of resistors: a. Resistance of the combination of resistors is equal to the sum of the resistances of individual resistors. Rs = R1 + R2 + R3 + …+ Rn b. The effective resistance in a series combination is greater than the individual resistances. c. Hence, this combination is used to increase resistance of the circuit. d. Current is the same in every part of the circuit. e. The total voltage across the combination is equal to the sum of the voltage across the separate resistors. [Any two characteristics: 1 mark each]

a.

[1]

[2]

C

B

S

N A

D R1 R2

B1

[1]

B2

Iron core Armature coil

Split ring Axle

Electric motor b. c.

4 4

Electric motor works on the principle that a current carrying conductor placed on a magnetic field experiences a force. Appliances in which electric motor is used : 1. Electric fans 2. Hair dryers 3. Electric cranes 4. Rolling mills

[2] [1] [½] [½] [½] [½]

Science and Technology

BOARD ANSWER PAPER : MARCH 2016  SCIENCE AND TECHNOLOGY  SECTION B 1.

2.

(A)

Answer the following sub-questions :

i.

Liver is the largest gland in the body.

ii.

Vas deferens is a part of male reproductive system, rest all are parts of female reproductive system. [1]

iii.

False:

[1]

Aquatic animals breathe at a faster rate than the terrestrial animals.

[1]

iv.

rr : Homozygous : : Rr : Heterozygous

[1]

v.

Main ore of aluminium-Bauxite.

[1]

(B)

Choose the correct alternative and rewrite the following:

i.

Hydrogen is liberated when acetic acid reacts with sodium metal.

[1]

ii.

For binary fission, Amoeba requires one parent cells.

[1]

iii.

A solution of CuSO4 in water is blue in colour.

[1]

iv.

Raisins are formed by drying grapes. The process that takes place during formation of raisins from grapes is osmosis. [1]

v.

Ethanoic acid has a pungent odour.

[1]

Answer the following questions (any five): i. Voluntary movements

ii.

Involuntary movements

i.

Voluntary movements are the movements which can be controlled by our will.

Involuntary movements are movements which cannot controlled by our will.

the be

ii.

Voluntary movements are controlled by motor areas in the fore brain and cerebellum in the hind brain.

Involuntary movements are controlled by the mid-brain and the medulla oblongata of the hind brain.

Eg.

Riding a bicycle, picking up an object from the floor, etc.

Breathing, sneezing, etc.

[1] [1]

a.

Cellular DNA is the source of information for synthesizing proteins in the cell.

[½]

b.

DNA possesses a double helical structure, which consists of two strands coiled around each other.

[½]

A fragment of DNA that provides complete information about one protein is referred to as “Gene” for that protein.

[½]

During sexual reproduction, each of the parent contributes equally to the DNA of the progeny.

[½]

c. d.

1

Board Answer Paper : March 2016 iii.

Stigma Petal

Style Carpel

Anther Ovary

Filament

Stamen

Sepal

iv.

v.

vi.

Longitudinal section of a typical flower i. The root system of the plants are specialized for absorbing water and minerals from the soil. ii. The roots respond to the stimuli of gravity and water and grow towards the soil. Thus, the root system of plants show gravitropic movement. Hence, the roots of plants grow away from light. a. b. c.

a. b. c. d.

3.

Drinking water sources such as rivers, lakes should be protected from water pollution. Rain water harvesting plant should be constructed to conserve rain water. Waste water should be taken to sewage treatment sites where it undergoes various methods of treatment. Such water can be used for agriculture and other purposes. [Any two: 1 mark each] Fossils are the dead remains of plants and animals which existed in the past. They are formed by various methods. Sometimes, impressions of plants and animals are formed on mud which get converted into fossils at later stage. At other times, plants and animals get burried in the soil and the soft part of the body gets decayed, while the hard part (bones) remains in the soil in the form of fossils.

Answer the following questions (any five): i. Alloy: a. An alloy is a homogenous mixture of two or more metals or a metal and a non-metal in definite proportion. Eg. a. Brass (copper and zinc) b. Bronze (copper and tin) In human males, two dissimilar chromosomes are present in the 23rd pair, the longer ‘X’ and the shorter ‘Y’. b. In females, the 23rd pair contains two similar ‘X’ chromosomes. c. All children inherit one ‘X’ chromosome from their mother. The other chromosome is inherited from the father. d. If the chromosome inherited from the father is ‘X’, then the offspring is a daughter and if it is ‘Y’, then the offspring is a son. Thus, the sex of the child is determined by the male sex chromosome.

ii.

[1] [1]

[2] [½] [½] [½] [½]

[1] [1] [1]

a.

XY

Parents:

Gametes:

Children:

X

XX

[½] [½] [½] [½]

XX

Y

XX

X

X

XY

XY

Girl Boy Sex determination in human beings

2 2

[2]

[1]

Science and Technology iii.

iv.

Neurons are classified, according to their functions, into three groups: a. Sensory neurons: They conduct impulses from the sense organs to the brain and spinal cord. b. Motor neurons: They conduct impulses from the brain and spinal cord to the effector organs like muscles and glands. c. Association neurons: They perform integrative functions of the nervous system. a. b. c. d.

v.

Three ‘R mantra’ is nothing but ‘Reduce, Reuse and Recycle’ approach to eliminate waste and conserve resources. ‘Reduce’ means using fewer resources in the first place. Instead of throwing things away, trying to find ways to use them again is ‘Reuse’. Recycled items are put through a process that makes it possible to create new products out of the materials from the old ones.

a. b. c.

Metal A with electronic configuration of 2,8,1 is sodium (Na). Metal B with electronic configuration of 2,8,8,2 is calcium (Ca). Metal A is more reactive than B as it has to lose only one electron from the outermost shell while metal B has to lose two electrons, to achieve a stable electronic configuration. d. Both sodium and calcium react with dil. HCl to form corresponding salt and release hydrogen gas. 2Na(s) + 2HCl(aq)  2NaCl(aq) + H2(g) Sodium

Ca(s) Calcium

vi.

4.

Hydrochloric acid

+

2HCl(aq)  Hydrochloric acid

Sodium chloride

Hydrogen

CaCl2(aq) + H2(g) Calcium chloride

Hydrogen

Disadvantages of a large family size: a. Large families affect both the individual as well as the community life. b. Large families may lead to economic pressure and poor housing. c. Children may get neglected at home. d. The children may also suffer from malnutrition due to insufficient medical care. e. There may also be lack of better education for the children. f. Large families may lead to poor health of mother in the family.

Answer the following question (any one): i. a. Anaerobic reaction = 5 b. Reaction in human muscles = 4 c. Aerobic respiration = 3 d. Reaction in plant cells = 1 e. Reaction in liver = 2 ii.

a. b. 1. 2. 3. 4. 5.

A group of organic compounds containing same functional group, which can be represented by the same general formula and which, more or less, show similar trends in their properties is called homologous series. The important characteristics of homologous series are as follows: The general formula of all compounds in the series is the same. They have the same functional group. Physical properties like melting point, boiling point, density, etc. generally show a gradual change with increase of molecular formula in the series. Chemical properties of the members of the series show close resemblance because of the presence of the same functional group in them. Consecutive members of the series differ from one another by CH2 group (methylene group), and their molecular weight differs by 14 units. [Any four characteristics:1 mark each]

[1] [1] [1] [1] [1] [1] [½] [½] [½] [½] [½]

[½]

[½] [½] [½] [½] [½] [½] [1] [1] [1] [1] [1]

[1]

[4]

3

Algebra

BOARD ANSWER PAPER : MARCH 2015  ALGEBRA 

 

Q.1. Attempt any five of the following sub-questions: i. The given sequence is 1, 4, 7, 10, … Here, t1 = 1, t2 = 4, t3 = 7, t4 = 10  t2  t1 = 4  1 = 3 t3  t2 = 7 – 4 = 3 t4  t3 = 10  7 = 3  The difference between two consecutive terms is constant.  The given sequence is an A.P. ii.

S = {1, 2, 3, 4, 5, 6, 7, 8, 9, 10, 11, 12, 13, 14, 15, 16, 17, 18, 19, 20, 21, 22, 23, 24, 25}

iii.

By adding given equations, we get 12 x + 13 y = 29 13 x + 12 y = 21



25x + 25y = 50 25 (x + y) = 50 50 x+y= 25 x+y=2

iv.

Given, Sn =

 

[½] [½] [1]

[½]

[½]

n n 1

For n = 10 10 10  1 10 S10 = 11

S10 =  v.

  vi.



[½] [½]

The given equation is x2 + 3x – 4 = 0 Substituting x = 1 in L.H.S of the above equation, we get L.H.S. = (1)2 + 3 (1) – 4 =1+3–4 =0 L.H.S = R.H.S 1 is the root of the given quadratic equation.

[½]

The given equation is x+y=5 Substituting x = 3 in above equation, we get 3+y=5 y=2

[½] [½]

Q.2. Attempt any four of the following sub-questions: i. x 2 – 7x + 12 = 0  x 2 – 4x – 3x + 12 = 0  x (x – 4) – 3 (x – 4) = 0  (x – 4) (x – 3) = 0  x–4=0 or x–3=0  x=4 or x=3

[½]

[½] [½] [½] [½]

1

Board Answer Paper: March 2015  ii.

  iii.     iv.

 v.     vi.     

The given A.P. is 4, 9, 14, …. Here, a = 4, d = 9 – 4 = 5, n = 10 Since, tn = a + (n – 1)d t10 = 4 + (10 – 1)5 = 4 + 45 t10 = 49

[½] [½] [½] [½]

The given equation is 5x + ay = 19 The point (x, y) = (2, 3) lies on the graph of the equation, hence it statifies the equation. Substituting x = 2 and y = 3 in the given equation, we get 5 (2) + a (3) = 19 10 + 3a = 19 3a = 9 a=3 When a die is thrown, S = {1, 2, 3, 4, 5, 6} A = Event of getting an odd number A = {1, 3, 5}

[½] [½]

[1] [1] [1]

The inter-relation between the measures of central tendency is Mean  Mode = 3(Mean  Median) Mode = Mean  3(Mean  Median) Mode = 101 – 3(101 – 100) Mode = 101 – 3(1) Mode = 98 x = 1 is the root of the given equation kx2 – 7x + 5 = 0 It satifies the given equation k(1)2 – 7(1) + 5 = 0 k–7+5=0 k–2=0 k=2

[½] [½] [½] [½]

[½] [½]

[1]

Q.3. Attempt any three of the following sub-questions: i. Measures of central Area (in Crop hectares) angle ()

2 2

Jowar

40

Wheat

60

Sugarcane

50

Vegetables

30

Total:

180

40  360 = 80 180 60  360 = 120 180 50  360 = 100 180 30  360 = 60 180

360

[1½]

Algebra The pie diagram representation is as follows:

Wheat

Jowar

120

80

[1½]

60 100

Vegetables

Sugarcane

ii.



When two coins are tossed, S = {HH, HT, TH, TT}

[½]

n(S) = 4

[½]

Let A be the event that at the most one tail turns up 

A = {HH, HT, TH}

[½]



n(A) = 3

[½]



P(A) =

n(A) n(S)

[½]



P(A) =

3 4

[½]

iii.

The given simultaneous equations are x+y=7

….(i)

and x – y = 5

….(ii)

From equation (i), y = 7 – x x

0

1

–1

y

7

6

8

(x, y)

(0, 7)

(1, 6)

(–1, 8)

From equation (ii), y = x – 5 x

0

1

–1

y

–5

–4

–6

(x, y)

(0, –5)

(1, – 4)

[½]

(–1, – 6)

3

Board Answer Paper: March 2015  Scale : (On both axes 1 cm = 1 unit)

Y 8

(1, 8)

7

(0, 7) (1, 6)

6 5 4 3 2 1

(6, 1) [2]

X

6

5

4

2

3

1

0

1

2

1

3

4

5

6 X

2 3 4 5 (1,6)

(1,4) (0,5)

6 Y

The two lines intersect at point (6, 1) 

(6, 1) is the solution of given simultaneous equations.



Solution set = {(6, 1)}

iv.

The number of seats arranged row wise is as follows: 20, 22, 24, ….

[½]

[½]

This sequence is an A.P. with



a = 20, d= 22 – 20 = 2, n = 22

[½]

Now, tn = a + (n – 1) d

[½]

t22 = 20 + (22 – 1) 2

[½]

= 20 + 21  2 = 62 

4 4

The number of seats in the twenty second row is 62.

[1]

Algebra v.

x2 + 11x + 24 = 0



x2 + 11x = – 24

….(i) 1

[½] 

2

Now, third term =   coefficient of x  2  1



[½]

2

=   11 2  = Adding

121 4

[½]

121 on both sides of (i), we get 4

x2 + 11x +

121 121 = – 24 + 4 4

2



11  25  x  = 4 2 

[½]

Taking square root on both sides, we get x+

11 5 =  2 2



x=

11 5  2 2



x=

11 5  2 2

or

x=

11 5  2 2



x=

6 2

or

x=

16 2



x=–3

or

x = –8



– 3 and – 8 are the roots of the given quadratic equation.

[1]

Q.4. Attempt any two of the following sub-questions: i.

The sample space for two digit numbers without repeating the digits is S = {10, 12, 13, 14, 15, 20, 21, 23, 24, 25, 30, 31, 32, 34, 35, 40, 41, 42, 43, 45, 50, 51, 52, 53, 54}

[1]

P is the event that the number so formed is even. 

P = {10, 12, 14, 20, 24, 30, 32, 34, 40, 42, 50, 52 , 54}

[1]

Q is the event that the number so formed is greater than 50. 

Q = {51, 52, 53, 54}

[1]

R is the event that the number so formed is divisible by 3. 

R = {12, 15, 21, 24, 30, 42, 45, 51, 54}

[1]

5

Board Answer Paper: March 2015  ii. Age (in years) Class interval 10  20 20  30 30  40 40  50 50  60 60  70 Total:

No. of patients Frequency fi 60 42 55  f 70 53 20  fi = 300

Cumulative frequency (less than type) 60 102  c.f. 157 227 280 300 

[1]

Here,  fi = N = 300 

300 N = = 150 2 2

[½]

Cumulative frequency (less than type) which is just greater than (or equal) to 150 is 157. 



Median class is 30  40.

[½]

Now, L = 30, f = 55, c.f. = 102, h = 10.

[½]

N  h Median = L +   c.f. 2  f

[½]

= 30 + (150  102) 

10 = 30 + 48  0.1818 55

= 30 + 8.73 = 38.73 

The median age of a patient is 38.73 years.

[1]

iii.

    

It is given that +=5 3 + 3 = 35 Now, ( + )3 = 3 + 32 + 32 + 3 ( + )3 = 3 + 3 + 3( + ) (5)3 = 35 + 3(5) 125 = 35 + 15  125 – 35 = 15  15 = 90

[1] [½] [½]



 =

 

 = 6 the required quadratic equation is x2  ( + )x +  = 0 x2  5x + 6 = 0

i.e.

90 15

[1] [½] [½]

Q.5. Attempt any two of the following sub-questions: i.

The instalments are in A.P.

[½]

Here, S10 = 4000 + 500 = 4500

[½]

Also, n = 10, d = 10

[½]

Now, Sn =

6 6

n [2a + (n  1)d] 2

[½]

Algebra 10 [2a + (10  1)(10)] 2



S10 =



4500 = 5 [2a + 9  (10)]



4500 = 2a  90 5



900 + 90 = 2a



990 = 2a

  

[½]

990 2 a = 495 Also,tn = a + (n  1)d a=

[1] [½]

t10 = 495 + (10  1)(10) = 495 + 9  (10)

[½]

= 495  90 

t10 = 405



The first instalment is ` 495 and the last instalment is ` 405.

ii.

Let there be x number of tickets each of ` 20 and y number of tickets each of ` 40. According to the first condition, x + y = 35 … (i) According to the second condition, 20x + 40y = 900

[½]



20(x + 2y) = 900



x + 2y =



900 20 x + 2y = 45

… (ii)

[½] [½] [½]

[1]

Subtracting equation (i) from (ii) x + 2y = 45 x + y = 35 () ()

()

y = 10 Substituting y = 10 in equation (i), we get x + 10 = 35

[1]



x = 35  10

[1]



There were 25 tickets of ` 20 each and 10 tickets of ` 40 each sold.



x = 25

[½]

iii. Speed (in km/hr)

No. of Students

2030

6

3040

80

4050

156

5060

98

6070

60 7

Board Answer Paper: March 2015 

Y

[5]

Scale: On X-axis: 1 cm = 10 km/hr On Y-axis: 1 cm = 10 students

160 150 140

Histogram

130 120 110 100

No. of Students

90 80 Frequency Curve

70 60 50 40 30 20 10

X 0

8 8

Y

20

30

40 50 60 Speed (in km/hr)

70

X

Algebra

 Q.1.

BOARD ANSWER PAPER : JULY 2015  ALGEBRA  Attempt any five of the following sub-questions: i. Given, tn = n + 2 For n = 1, t1 = 1 + 2 = 3 For n = 2, t2 = 2 + 2 = 4 ii.  iii.

iv. v.   

2.

3y2 = 10y + 7 3y2  10y  7 = 0 is in the standard form. 4 3 2 7

[½]

= 28  6 = 22

[½]

When two coins are tossed, S = {HH, HT, TH, TT} The given sequence is 1, 3, 6, 10, … Here, t1 = 1, t2 = 3, t3 = 6, t4 = 10 t2  t1 = 3  1 = 2 t3  t2 = 6  3 = 3 t2  t1  t3  t2 The difference between two consecutive terms is not constant. The given sequence is not an A.P. Let the length of the rectangle be x cm and its breadth be y cm. According to the given condition, 2(x + y) = 36



36 x+y= 2



x + y = 18 is the required equation.



 iii.

The given A.P. is 7, 13, 19, 25, … Here, a = 7, d = 13 – 7 = 6, n = 18 Since, tn = a + (n – 1)d t18 = 7 + (18 – 1)6 = 7 + 102 t18 = 109



When a die is thrown, S = {1, 2, 3, 4, 5, 6} P is the event that the number is odd. P = {1, 3, 5}

iv. 

Here, Dx = 18, Dy = 15 and D = 3 Using Cramer’s rule, we get x=

Dx D

[1]

[½]

[½]

[½]

x + y = 18

Attempt any four of the following subquestions: i. x = 4 is the root of the given equation x2  7x + k = 0  It satisfies the given equation  (4)2  7(4) + k = 0  16  28 + k = 0  –12 + k = 0  k = 12



[1]

= (4  7)  (2  3)

vi. 

ii.

[½] [½]

[½]

[½] [½]

[1] [½] [½] [½] [½] [1] [1]

[½]

1

Board Answer Paper: July 2015 18 3



x=



x=6

[½]

and y =

[½]

D

15 3



y=

 

y=5 x = 6 and y = 5

v.

Let  = 5,  = 7 then,  +  = 5 + 7 = 12 and  = 5 (7) = 35 The required quadratic equation is x2 – ( + ) x +  = 0 x2 – 12x + 35 = 0

  vi.

3.

Dy

   

The inter-relation between the measures of central tendency is Mean – Mode = 3 (Mean – Median) Mean – 180 = 3 (Mean – 156) Mean – 180 = 3 Mean – 468 468 – 180 = 3 Mean – Mean 288 = 2 Mean



Mean =



Mean = 144

[½] [½] [½] [½] [½] [½]

288 2

[1]

Attempt any three of the following subquestions : i. The given equation is 2x 2 + 5x + 2 = 0 Comparing it with ax 2 + bx + c = 0, we get a = 2, b = 5, c = 2 

[½]

2

[1]

b  b  4ac 2a

[½]

=

5  (5) 2  4(2)(2) 2(2)

[½]

=

5  25  16 4

x =

5  9 5  3 = 4 4 5  3 2 1 5  3 8 x = = = or x = = = 2 4 4 2 4 4 1 , 2 are the roots of the given equation. 2

=

  ii.    iii.  

2 2

S = {1, 2, 3, 4, 5, 6, 7, 8, 9, 10, 11, 12, 13, 14, 15, 16, 17, 18, 19, 20, 21, 22, 23, 24, 25, 26, 27, 28, 29, 30} n(S) = 30 A is the event that ticket drawn bears a number which is a perfect square. A = {1, 4, 9, 16, 25} n(A) = 5 Given, t18 = 52 and t39 = 148 Now, tn = a + (n  1)d t18 = a + (18  1)d 52 = a + 17d

[1]

[1] [½] [1] [½]

Algebra 

a + 17d = 52 ... (i) Also, t39 = a + (39  1)d 148 = a + 38d a + 38d = 148 ... (ii) Adding (i) and (ii), we get a + 17d = 52 a + 38d = 148 2a + 55d = 200 … (iii) n Also, Sn = [2a + (n – 1)d] 2 56 [2a + (56 – 1)d] S56 = 2 = 28 [2a + 55d] = 28 (200) …[From (iii)] S56 = 5600 Sum of the first 56 terms of the A.P. is 5600.

 



  iv.  

[½]

[½]

[1]

[1]

The given equation is 3x – y = –6 3x + 6 = y y = 3x + 6 x y (x, y)

0 6 (0, 6)

–1 3 (1, 3)

1 9 (1, 9)

[½]

Y

Scale : (On both axes 1 cm = 1unit)

(1, 9)

9 8 7 6

(0,6 )

5 4 (–1, 3)

3 2 1

(2, 0) X

6

5

4

3

2

3x – y = –6

1

0

1

2

3

4

5

6

X

1 [1½]



The points of intersection of graph with X-axis is (–2, 0) and with Y-axis is (0, 6).

[1]

3

Board Answer Paper: July 2015 v. Part of the day

Percentage of electricity used

Morning

30

Afternoon

40

Evening

20

Night

10

Total:

100

Measure of central angle () 30 100 40 100 20 100 10 100

 360 = 108  360 = 144  360 = 72  360 = 36 360

[1½]

The pie diagram representation is as follows:

Morning Afternoon

108

144

36 Night

[1½]

72 Evening

4.

Attempt any two of the following subquestions: i. A card is drawn from a pack of 52 cards  n(S) = 52 a. Let A be the event of getting a king card. The pack of cards consists of 4 king cards.  n(A) = 4 

4 1 n(A) = = P(A) = 52 13 n(S)

b.

Let B be the event of getting a face card. There are 12 face cards in a pack of cards. n(B) = 12



[1]



3 n(B) 12 P(B) = = = 52 13 n(S)

ii.

   

3x4  13x2 + 10 = 0 Let x2 = m, The given quadratic equation becomes 3m2  13m + 10 = 0 3m2  3m  10m + 10 = 0 3m(m  1)  10(m  1) = 0 (m  1)(3m  10) = 0 m  1 = 0 or 3m  10 = 0



m=1



m=

10 3

or

x2 =

10 3

But x = m 

4 4

x2 = 1

[1] [1]

or

2

[1]

[½] [½] [1]

[1]

Algebra 

x = 1



The solution set is 1, 1,

or

x=  

10 3

10 10  ,  3 3 

[1]

iii. Bowling speed (km/hr) Class interval 85  100 100  115 115  130 130  145 

Here, the maximum frequency is 11. Modal class is 100  115. Now, L = 100, fm = 11, f1 = 9, f2 = 8, h = 15



Mode = L + 



[1] [1]



f m  f1  h  2 f m  f1  f 2   11  9  = 100 +    15  2  11  9  8 

= 100 +

5.

No. of players Frequency fi 9  f1 11  fm 8  f2 5

[½] [½]

2 15 = 100 + 6 = 106 5

The modal bowling speed of a player is 106 km/hr.

Attempt any two of the following subquestions: i. Let there be x number of rows and y number of students in each row  total number of students = xy According to the first condition, (y  3)(x + 10) = xy  xy  3x + 10y  30 = xy  3x + 10y  30 = xy  xy  3x + 10y = 0 + 30  3x + 10y = 30  3x  10y = 30 … (i) According to the second condition, (y + 5)(x  10) = xy  xy + 5x  10y  50 = xy  5x  10y  50 = xy  xy  5x  10y = 50 + 0  5x  10y = 50 … (ii) Subtracting equation (i) from (ii), we get 5x  10y = 50 3x  10y = 30 () (+) (+) 2x 

x=

[1]

[½]

[1]

[1]

= 80 80 2



x = 40

[1]

Substituting the value of x in equation (i), we get 3(40)  10y = 30  120  10y = 30  10y = 30  120  10y = 150

5

Board Answer Paper: July 2015 10y = 150

  

y = 15 The total number of students = xy = 40  15 = 600. The total number of students participating in the drill is 600.

[1]

ii.

[½]

 

Let the temperatures from Monday to Friday in A.P. be a  2d, a  d, a, a + d, a + 2d. According to the first condition, a  2d + a  d + a = 0 3a  3d = 0 ad =0 a=d According to the second condition, a + d + a + 2d = 15 2a + 3d = 15 2a + 3a = 15 …[ d = a]

  

5a = 15 a=3 d=3

  



150 10



y=

[½]

[1]

[1] [½]

…[ d = a]

a  2d = 3  2  3 =  3 ad=33=0 a=3 a+d=3+3=6 a + 2d = 3 + 2  3 = 9 The temperatures of each of the five days are 3 C, 0 C, 3 C, 6 C and 9 C respectively.

Thus,



[½] [½] [½] [½]

iii. House Rent (in ` per month) Number of families

400-600 200

800-1000 300

1000-1200 50

Scale: On X-axis: 2 cm = ` 200 On Y-axis: 1 cm = 50 Families

Y  Number of families

600-800 240

300 250 200

150 100 50

X 0

6 6

Y

400

600

800

1000

 House rent per month in (`) 

1200

X

[5]

Algebra

BOARD ANSWER PAPER : MARCH 2016  ALGEBRA    Q.1. Attempt any five of the following sub-questions: i. Given, tn = 3n – 4 For n = 1, t1 = 3(1) – 4 = –1 For n = 2, t2 = 3(2) – 4 = 6 – 4 = 2 ii.

iii. 

iv.

Given equation is 2x2 – x – 3 = 0 Comparing it with ax2 + bx + c = 0, we get a = 2, b = –1, c = –3 Let  = –2 and  = –3 the required quadratic equation is x2 – ( + ) x +  = 0 i.e., x2 – (–2 – 3) x + (–2) (–3) = 0 i.e., x2 + 5x + 6 = 0 4 2 = (4  1) – (–2  3) 3 1

=4+6 = 10 v. vi.

2.

S = {Sunday, Monday, Tuesday, Wednesday, Thrusday, Friday, Saturday} 20  30 50 = 25  2 2 30  40 70 = 35  Class mark of 30 – 40 = 2 2

Class mark of 20 – 30 =

Attempt any four of the following subquestions: i. Given, a = 11, d = –2  t1 = a = 11 t2 = t1 + d = 11 + (–2) = 9 t3 = t2 + d = 9 + (–2) = 7  The first three terms of the A.P. are 11, 9 and 7. ii.      iii.

x2 + 11x + 24 = 0 x2 + 8x + 3x + 24 = 0 x (x + 8) + 3 (x + 8) = 0 (x + 8) (x + 3) = 0 x + 8 = 0 or x + 3 = 0 x = –8 or x = –3

[1] [½] [½] [½] [½] [1] [½] [½]

[½] [½] [½] [½]

[½] [½] [½] [½]

x 5 = 31 3 4

    

4(x) – 3 (–5) = 31 4x + 15 = 31 4x = 31 – 15 4x = 16 x=4

iv.

When a die a thrown S = {1, 2, 3, 4, 5, 6} n (S) = 6



[½] [½]

[1]

[1]

1

Board Answer Paper : March 2016 a.  

A is the event of getting number divisible by 3 A = {3,6} n(A) = 2



P(A) =

b.  

B is the event of getting number less than 5. B = {1, 2, 3, 4} n(B) = 4



P(B) =

n(A) 2 1   n(S) 6 3

[1]

n(B) 4 2   n(S) 6 3

[1]

v. Number of words

Class mark (xi)

600 – 800 800 – 1000 1000 – 1200 1200 – 1400 1400 – 1600 Total:

700 900 1100 1300 1500

Mean  x   

No. of candidates frequency (fi) 14 22 30 18 16 f i= 100

fixi 9800 19800 33000 23400 24000 fixi = 10000

[1]

 fi xi 110000 = 1100   fi 100

The mean number of words written are 1100.

[1]

vi. Subject

Marks

Measure of central angle()

Marathi

95

95  360 = 95 360

Hindi

90

90  360 = 90 360

English

95

95  360 = 95 360

Mathematics

80

80  360 = 80 360

Total

360

360

[1]

The pie diagram representation is as follows:

Hindi 90 95 English

2 2

Marathi 95 80 Mathematics

[1]

Algebra 3.

Attempt any three of the following subquestions : i. The given equation is 6x2  7x  1 = 0 Comparing it with ax2 + bx + c = 0, we get a = 6, b = 7, c = 1 

x = =

[1]

b  b 2  4ac 2a

[½]

(7)  (7) 2  4(6)(1) 2(6)

[½]

7  73 7  49  24 = 12 12



x=



7 + 73 7  73 , are the roots of the given equation. 12 12

[1]

 a.  

Let the three boys be B1, B2, B3 and the two girls be G1 and G2. A committee of two is to be formed. The sample space is S = {B1B2, B1B3, B1G1, B1G2, B2B3, B2G1, B2G2, B3G1, B3G2, G1G2} n(S) = 10 A is the event that the committee contains at least one boy. A={ B1B2, B1B3, B1G1, B1G2, B2B3, B2G1, B2G2, B3G1, B3G2} n(A) = 9



P(A) =

b.  

B is the event that the committee contains one boy and one girl. B = {B1G1, B1G2, B2G1, B2G2, B3G1, B3G2} n(B) = 6



P(B) =

ii. 

[1]

9 n(A) = 10 n(S)

[1]

6 3 n(B) = = 10 5 n(S)

[1]

iii. Diameter (in mm) Class interval

Class mark (xi)

33  35 36  38 39  41 42  44 45  47 Total: d =

34 37 40  A 43 46 

di = xi  A di = xi  40 6 3 0 3 6 

No. of screws Frequency (fi) 9 21 30 20 18 fi = 98

 fi di 51 = = 0.52 98  fi



Mean  x  = A + d

 

= 40 + 0.52 x = 40.52 The mean diameter of the head of a screw is 40.52 mm.

fidi 54 63 0 60 108 fi di = 51

[1½]

[½]

[1]

3

Board Answer Paper : March 2016 iv. Marks Scored

0  20

20  40

40  60

60  80

80  100

3

8

15

17

7

Number of students Y

Scale: On X-axis: 2 cm = 20 marks On Y-axis: 1 cm = 2 Students

18 16

 No. of students 

14 12 10 8 6 4 2 X 0

20

60 80  Marks 

40

Y

100

X

[3]

v.

4 4

Rainfall (in mm)

Class mark (xi)

– 20  25 25  30 30  35 35  40 40  45 45  50 –

17.5 22.5 27.5 32.5 37.5 42.5 47.5 52.5

No. of Years Frequency (fi) 0 2 5 8 12 10 7 0

[1]

Algebra Y

Scale: On X-axis: 1 cm = 5 mm On Y-axis: 1 cm = 2 years

12

 No. of Years 

10 8 6 4 2 X 0

17.5

Y 4.

22.5

27.5

32.5

37.5 42.5 47.5 52.5  Rainfall (in mm) 

Attempt any two of the following subquestions: i. Given, t11 = 16, t21 = 29 a. Since, tn = a + (n  1)d  t11 = a + (11  1)d  16 = a + 10d  a + 10d = 16 Also, t21 = a + (21  1)d  29 = a + 20d  a + 20d = 29 Subtracting (i) from (ii), we get a + 20d = 29 a + 10d = 16 () () () 10d = 13 

d=

13 10

... (i)

[½]

... (ii)

[½]

13 in (i), we get 10

13 = 16 10

  

a + 13 = 16 a = 16  13 a=3



13 = 1.3 a = 3 and d = 10



The 1st term is 3 and the common difference is 1.3

b. 

Now, tn = a + (n  1)d t34 = 3 + (34  1)1.3 = 3 + 33  1.3 = 3 + 42.9 t34 = 45.9 The 34th term is 45.9

 

[3]

[½]

Substituting d = a + 10 

X

[½]

[1]

5

Board Answer Paper : March 2016 c.     

Given, tn = 55 Since, tn = a + (n  1)d 55 = 3 + (n  1)1.3 55  3 = (n  1)1.3 52 = (n  1)1.3 52 =n1 1.3 520 =n1 13

  

40 = n  1 n = 40 + 1 = 41 tn = 55 for n = 41

ii.

The given simultaneous equations are 7 13  = 27 2 x 1 y  2

... (i)

13 7  = 33 2 x 1 y  2

... (ii)

Let 

1 1 be p and be q y2 2 x 1

equations (i) and (ii) becomes 7p + 13q = 27 13p + 7q = 33 Adding equations (iii) and (iv), 7p + 13q = 27 13p + 7q = 33



20p + 20q = 60 20 (p + q) = 60



p+q=



[1]

... (iii) ... (iv)

60 20

p+q=3 Subtracting equation (iii) from (iv), 13p + 7q = 33 7p + 13q = 27 () () ()



6p – 6q = 6 6(p – q) = 6



p–q=



p–q=1

... (v)

[1]

... (vi)

[1]

6 6

Now, adding equations (v) and (vi), p+q=3 p–q=1 2p 4 2



p=



p=2 Substituting p = 2 in equation (v), we get 2+q=3 q=3–2 q=1 (p, q) = (2,1)

  

6 6

=4

[1]

Algebra Resubstituting the values of p and q, we get 2=    

2(2x + 1) = 1 4x + 2 = 1 4x = 1 – 2 4x = –1



x=





(x, y) =  ,  1   4  Let P(C) be x P(B) = 2 × P(C) P(B) = 2x and P(A) = 2 × P(B) P(A) = 4x

 

Given, P(A) + P(B) + P(C) = 1 4x + 2x + x = 1 7x = 1



x=



1 4 = , 7 7 1 2 P(B) = 2x = 2 × = 7 7 1 P(C) = x = 7 4 2 1 P(A) = , P(B) = , P(C) = 7 7 7

iii.  

 5.

1 1 and 1 = y2 2 x 1

1 4

and and and and

1(y + 2) = 1 y+2=1 y=1–2 y = –1

and

y = –1

 1



[1] [½] … (Given) [½] … (Given) [½]

1 7

[1] [½]

P(A) = 4x = 4 ×

[½] [½]

Attempt any two of the following subquestions: i. Let the divisor be x  quotient = x

 

[½]

1 x and remainder =  x = 2 2

[½]

Now, Divisor  Quotient + Remainder = Dividend.

[½]

x x  x + = 6123 2 x x2 + = 6123 2

  

2x2 + x = 2  6123 2x2 + x = 12246 2x2 + x  12246 = 0 Comparing with ax2 + bx + c = 0, we get a = 2, b = 1, c = –12246



x= = =

 b  b 2  4ac 2a

[½]

….[Multiplying both sides by 2]

[½]

[½]

1  1  4  2  12246 

2 2

1  1  97968 4

7

Board Answer Paper : March 2016 1  97969 4 1  313 = 4 1  313 1  313 or = 4 4 312 314 or = 4 4 157 x = 78 or x =  2 157 as a divisor cannot be negative as well as a fraction. But x   2

=



[½]

 

x = 78 The divisor is 78.

[½]

ii.

The numbers from 50 to 350 which are divisible by 6 are 54, 60, 66, .... 348 This sequence is an A.P. with a = 54, d = 60  54 = 6, tn = 348 But tn = a + (n – 1) d 348 = 54 + (n  1) 6 348 – 54 = (n  1) 6 294 = (n – 1) 6

[1]

   

294 =n–1 6

  

49 = n – 1 49 + 1 = n n = 50

 

  iii.

    

[½] [½]

[1]

n Now, Sn = [t1 + tn] 2 50 [54 + 348] S50 = 2

= 25 (402) S50 = 10050 Also, t15 = a + (15 – 1) d = 54 + 14  6 = 54 + 84 t15 = 138 The sum of all numbers from 50 to 350 which are divisible by 6 is 10050 and 15th term of the A.P. is 138. Let the digit in the hundreath’s place be x and the digit in the unit place be y. Digit Original Number Reversed Number

8 8

[1]

H x y

T x+y+1 y +x+1

[1]

[1]

[½]

U y x

The original number = 100x + 10 (x + y + 1) + y = 100x + 10x + 10y + 10 + y = 110x + 11y + 10 According to the first condition, 110x + 11y + 10 = 17 [(x) + (x + y + 1) + y] 110x + 11y + 10 = 17 (2x + 2y + 1) 110x + 11y + 10 = 34x + 34y + 17 110x – 34x + 11y – 34y = 17 – 10 76x  23y = 7

[½]

…. (i)

[1]

Algebra The reversed number = 100y + 10 (y + x + 1) + x = 100y + 10y + 10x + 10 + x = 11x + 110y + 10

 



  



According to the second condition. (110x + 11y + 10) + 198 = 11x + 110y + 10 110x – 11x + 11y – 110y = 10 – 198 – 10 99x – 99y = –198 Dividing both sides, by 99 we get x – y = –2 Multiply equation (ii) by 23, we get 23x  23y = –46 Subtracting (iii) from (i), we get 76x – 23y = 7 23x – 23y = – 46 () (+) (+)  53x = 53 x=1 Substituting value of x in equation (ii), we get 1 – y = –2 1+2=y y=3 Required Number = 110x + 11y + 10 = 110(1) + 11(3) + 10 = 110 + 33 + 10 = 153 Required Number is 153

[½]

…. (ii)

[1]

…. (iii)

[½]

[½]

[½]

9

Geometry

BOARD ANSWER PAPER : MARCH 2015  GEOMETRY 1.

 

Solve any five sub-questions: i.

A(ABC) AB = DC A(DCB)



A(ΔABC) 2 = 3 A(ΔDCB)

ii. 

---- [Ratio of the areas of two triangles having equal base is equal [½] to the ratio of their corresponding heights.] [½]

Equation of the line is: y = –2x + 3 comparing it with y = mx + c, we get

[½]

m = 2 and c = 3 

slope = 2 and y-intercept = 3

iii.

sin  =

opposite side hypotenuse



sin  =

BC AC

[½]



sin  =

1 2

[½]

iv.

Diagonal of a square = =

[½]

2  (side)

[½]

2  (10)



Diagonal of a square = 10 2 cm

[½]

v.

Volume of a cube = l3

[½] 3

But, volume of cube = 1000 cm

2.



l3 = 1000



l = 10 cm

vi.

If two circles touch internally, then the distance between their centres is difference of their radii.

[½]



the distance between their centres = 5  3 = 2 cm

[½]

----[Taking cube root on both sides]

[½]

Solve any four sub-questions: i.

sin  =

5 13

---- [Given]

We know that, sin2  + cos2  = 1

[½]

2



5 2   + cos  = 1  13 



cos2  = 1 



cos2  =

144 169



cos  =

12 13

[½]

25 169

[½] ----[Taking square root on both sides]

[½]

1

Board Answer Paper: March 2015  ii.

A D

115 B

C

Draw angle of 115

[½]

Draw arcs

[½]

Obtain point D

[½]

Join BD (angle bisector of ABC)

[½]

iii.

Let C  (3, 5) (x1, y1), D  (2, 3)  (x2, y2)

[½]



slope of line CD =

y2  y1 x2  x1

[½]

=

3  5 2  3

[½]

=

8 5



slope of line CD =

iv.

Radius (r) = 5 cm

8 5

[½]

Length of arc (l) = 10 cm Area of sector = =

radius  length of arc 2

[½]

5  10 2

[½]

= 5  5 = 25 

Area of sector is 25 cm2.

v.

In PQR,

[1]

Seg RS is the angle bisector of PRQ

2 2



PS PR  SQ QR



6 15  8 QR



QR =



QR = 20

15  8 6

---- [Given]

---- [By property of angle bisector of a triangle]

[½] [½] [½] [½]

Geometry D

vi.

A Y C

B

1 2 1 mAEB = 2 1 mEAD = 2 1 mEAD = 2

mAEB = 



X E

m(arc AYC)

---- [Inscribed angle theorem]

 40 = 20

---- (i)

m(arc DXE)

---- [Inscribed angle theorem]

 100 = 50

---- (ii)

[½]

---- [Remote interior angle theorem] ---- [From (i) and (ii)]

[½]

---- [D – A  B]

[½]

With respect to BAE, EAD is the exterior angle.  EAD = ABE + AEB  50 = ABE + 20  ABE = 30 i.e., DBE = 30 3.

Solve any three sub-questions: i. MPN = 40 QMP = 90 QNP = 90 In MQNP, MPN + QMP + QNP + MQN = 360    

[½]

---- [Given]

---- [Tangent is perpendicular to radius]

[1]

---- [Sum of the measures of the angles of a quadrilateral is 360]

[½]

40 + 90 + 90 + MQN = 360 220 + MQN = 360 MQN = 360  220 MQN = 140

[½]

[1]

ii.

P

M

2.8 cm

C 7 cm

Q

L

Draw the circle of radius 2.8 cm Plot point L such that ML = 7 cm Draw perpendicular bisector of seg ML Draw circle with centre C Draw tangents LP and LQ

[½] [½] [1] [½] [½]

3

Board Answer Paper: March 2015  iii.

Let A1 and A2 be the areas of larger triangle and smaller triangle respectively and h1 and h2 be their corresponding heights. A1 6 = 5 A2

---- (i) [Given]

h1 = 9

---- (ii) [Given]

A1 h = 1 A2 h2

[½]

[½]

---- [Ratio of the areas of two triangles having equal base is equal to the ratio of their corresponding heights.]

[½]

---- [From (i) and (ii)]

[½]



6 5

=

9 h2



h2

=

59 6



h2 =

 

h2 = 7.5 cm The corresponding height of the smaller triangle is 7.5 cm.

15 2

iv.

[1]

C

A

45

M

[½]

30 m B

10 m

D

Let AB and CD represent the height of the two buildings. AB = 30 m Let BD represent the width of the road. BD = 10 m Draw seg AM  seg CD. CAM is the angle of elevation.  CAM = 45 In ABDM, B = D = 90 M = 90 ---- [Construction]  A = 90   ---- [Remaining angle of ABDM]  ABDM is a rectangle ---- [Each angle is 90]  AM = BD = 10 m ---- (i) [Opposite sides of a rectangle] DM = AB = 30 m ---- (ii) In right angled AMC, tan CAM = tan 45



 

CM AM



tan 45 =





1=







 

CM = 10 m ---- (iii) CD = CM + DM ---- [CMD] CD = 10 + 30 = 40 m ---- [From (ii) and (iii)] The height of the second building is 40 m.

4 4

CM 10

[½]

[½]

[½] ---- [From (i)] [½]

[½]

Geometry v.

Given: For the sphere, radius (r) = 4.2 cm To find: Volume, total surface area Solution: 4 3 r 3 4 22 =   4.2  4.2  4.2 3 7

[½]

Volume of the sphere =

[½]

= 4  22  1.4  0.6  4.2 = 310.46 cm3 Total surface area of sphere = 4r2 =4  4.

22  4.2  4.2 7

[½] [½] [½]

= 4  22  0.6  4.2 = 221.76 cm2 The volume of the sphere is 310.46 cm3 and the surface area of the sphere is 221.76 cm2.

[½]

Solve any two sub-questions: i. Given: ABCD is a cyclic quadrilateral.

A D O

[½]

B C To prove: BAD + BCD = 180, ABC + ADC = 180 Proof: 1 m(arc BCD) 2 1 m BCD = m(arc BAD) 2

mBAD =

[½]

---- (i) [Inscribed angle theorem]

[½]

---- (ii) [Inscribed angle theorem]

[½]

Adding equations (i) and (ii), we get 1 1 m(arc BCD) + m(arc BAD) 2 2 1 mBAD + mBCD = [m(arc BCD) + m(arc BAD)] 2 1 ---- [Measure of a circle is 360] BAD + BCD =  360 2

mBAD + mBCD =   

   ii.

BAD + BCD = 180

---- (iii)

[½]

In ABCD, BCD +BAD +ABC +ADC = 360 ---- [Sum of measures of angles of a quadrilateral] 180 + ABC + ADC = 360 ---- [From (iii)] ABC + ADC = 360  180 ABC + ADC = 180 Hence, the opposite angles of a cyclic quadrilateral are supplementary. L.H.S. = sin6  + cos6  = (sin2 )3 + (cos2 )3 = (sin2 + cos2) [(sin2 )2  sin2 cos2 + (cos2)2] ---- [ a3 + b3 = (a + b) (a2  ab + b2)] = 1[sin4   sin2  cos2  + cos4 ] 4

2

2

2

---- [ sin2 + cos2 = 1] 2

[½]

4

= sin  + 2sin  cos   3sin  cos  + cos  = sin4  + 2sin2  cos2  + cos4   3 sin2  cos2

[½]

[½] [½] [½] [½] [½] [½]

5

Board Answer Paper: March 2015  = (sin2  + cos2 )2  3sin2  cos2  = (1)2  3sin2 cos2 = 1  3sin2  cos2  = R.H.S. sin6  + cos6  = 1  3sin2  cos2 

 iii.

----[ (a + b)2 = a2 + 2ab + b2] [½]

Given:

[½]

[½]

For the cylindrical part: 20 = 2 cm 10 diameter 2 = = 1 cm radius (r1) = 2 2

Diameter = 20 mm =

height (h1) = height of test tube  height of hemispherical portion h1 = 15  1 = 14 cm For the hemispherical portion: Radius (r2) = 1 cm To find: Capacity (volume) of the test tube Solution: Capacity of test tube = volume of cylindrical part + volume of hemispherical portion 





2



=  r12h1 +   r23  3 

[½] [½]

[½] [½]

2 3

= (  1  1  14) + (    1  1  1)  

[½]

[½]

2

=  14   = 3.14(14 + 0.666) 3  5.



= 3.14  14.666 = 46.05 cm3 Capacity of the test tube is 46.05 cm3.

[1]

Solve any two sub-questions: i. E A

[½]

  B

Given:

D

C

In ABC, ray AD bisects BAC

To Prove that:

BD AB = DC AC

[½]

Construction: Draw a line parallel to ray AD, passing through point C. Extend BA to intersect the line at E. Proof: In BEC, seg AD || side EC ---- [By construction]  

6 6

BD AB  DC AE

---- (i) [By B.P.T.]

line AD || line EC on transversal BE BAD  AEC ---- (ii) [Corresponding angles]

[½]

[½] [½]

Geometry line AD || line EC on transversal AC.  

CAD  ACE

---- (iii) [Alternate angles]

[½]

Also, BAD  CAD

---- (iv) [ Ray AD bisects BAC]

[½]

AEC   ACE

---- (v) [From (ii), (iii) and (iv)]

[½]

In AEC, AEC  ACE

---- [From (v)]



AE = AC

---- (vi) [Sides opposite to congruent angles]

[½]



BD AB = DC AC

---- [From (i) and (vi)]

[½]

l

ii.

m=2 A (2, 6)

n=3 P (x, y)

[½]

B (3, 4)

Let A  (2, 6)  (x1, y1), B  (3, 4)  (x2, y2) m:n=2:3 Let P divide AB internally in the ratio 2 : 3 By internal division section formula,

[½] [½]

 mx2  nx1 my2  ny1  ,  mn   mn

[½]

 2(3)  3(2) 2( 4)  3(6)  ,  23 23  

[½]

P  

P 



P 



P  ,



P  (0, 2)

 6  6 8  18  ,  5   5  0 10   5 5 

[½]

3 Equation of line with slope (m) = and passing through the point P  (0, 2)  (x1, y1) in 2

slope point form y  y1 = m(x x1) is

[1]

3 y  2 = (x  0) 2

[½]

   

2(y  2) = 3x 2y  4 = 3x 3x  2y + 4 = 0 The equation of the line is 3x  2y + 4 = 0.

iii.

RST ~ UAY



S = A = 50

---- [c. a. s. t]

[½]



RS ST RT   UA AY UY

---- (i) [c. s. s. t]

[½]

[½]

Since, corresponding sides are in the ratio 5 : 4 

RS ST RT 5    UA AY UY 4

---- [From (i)]

[½]



6 7.5 5   UA AY 4

---- (ii)

[½]

7

Board Answer Paper: March 2015  Consider,

6 5  UA 4



5  UA = 6  4



UA =



UA = 4.8 cm

---- [From (ii)]

6 4 5

[1]

7.5 5 Now, Consider  AY 4

---- [From (ii)]



AY  5 = 7.5  4



AY =

 

AY = 6 cm In UAY, UA = 4.8 cm, AY = 6 cm and A = 50

7.5  4 5

[1]

Y

[1]

U

8 8

50 4.8 cm

A

Geometry

BOARD ANSWER PAPER : JULY 2015  GEOMETRY 1.

Solve any five sub-questions: i.

A  ABE  A(BAD)

=

BE AD

....[Ratio of areas of two triangles having equal base is equal to the ratio of their corresponding heights.]

  ii.

A  ABE  A(BAD)

=

6 9

=

2 3

A  ΔABE  A(ΔBAD)

[½]

[½]

Diagonal of a square = =

2  (side)

[½]

2  (16)



Diagonal of a square = 16 2 cm

[½]

iii.

If two circles touch internally, then the distance between their centres is difference of their radii.

[½]



the distance between their centres = 8  3 = 5 cm

[½]

iv.

Given, cos  = But cos 30 =

3 2 3 2

[½]



cos  = cos 30



 = 30

[½]

v.

Equation of line in slope-intercept form is y = mx + c.

[½]

Here, m = 2 and c = 5 

Equation of line is y = 2x + 5.

vi.

Total surface area of cube = 6 l2

[½] [½] 2

= 6  (9)  2.

Total surface area of cube = 486 cm2

[½]

Solve any four sub-questions: i.

In ABC, line l || side BC



AP AY = PB YC



4 5 = x 8



x =



x = 10 units

.... [Given] .... [By B.P.T.]

[½] [½]

8 5 4

[1]

1

Board Answer Paper : July 2015 ii.

MPN = 40

.... [Given]

QMP = 90

.... [Tangent is perpendicular to radius]

[½]

QNP = 90 In MQNP, .... [Sum of the measures of the angles of a quadrilateral is 360]

MPN + QMP + QNP + MQN = 360



40 + 90 + 90 + MQN = 360



220 + MQN = 360



MQN = 360  220



MQN = 140

[½] [½]

[½]

iii.

3 .5 cm

P

iv.

R

Draw a circle of radius 3.5 cm

[½]

Extend the line passing through R

[½]

Draw the perpendicular at point R

[1]

Y P X

O

A

X

Y

The initial arm rotates by 220 in clockwise direction. The angle is more than 180 and less than 270

2 2



AOP lies between 270and 180.



The terminal arm lies in quadrant II.







[1] [1]

Geometry v.

Given, radius (r) = 3 cm height (h) = 7 cm Curved surface area of cylinder = 2rh =2

The curved surface area of the cylinder is 132 cm2.

vi.

Given, radius (r) = 10 cm, central angle () = 72

[1]

 r 2 360

[½]

=

72  3.14  10  10 360

[½]

=

1  314 5

Area of sector =

3.

22  3  7 = 132 cm2 7





[1]

Area of sector = 62.8 cm2

[1]

Solve any three sub-questions: i.

seg AQ is the median on side BC.



BQ = QC = =

1 BC 2

.... [Q is the midpoint on side BC]

1  10 2

= 5 units

[1]

In ABC, seg AQ is the median 

AB2 + AC2 = 2AQ2 + 2BQ2 2

.... [By Apollonius theorem]

2



122 = 2AQ + 2(5)



122 = 2AQ2 + 50



122  50 = 2AQ2



72 = 2AQ2



AQ2 =



AQ2 = 36



AQ = 6 units



The length of the median on side BC is 6 units.

ii.

Line CM is a tangent at M and line CA is a secant.



CM2 = CA  CB

[½] [½]

72 2

.... [Taking square root on both sides]

.... (i) [Tangent secant property]

[1]

[1]

Line CN is a tangent at N and line CA is a secant.



CN2 = CA  CB

.... (ii) [Tangent secant property]

CM2 = CN2

.... [From (i) and (ii)]

CM = CN

.... [Taking square root on both sides]

[1] [1]

3

Board Answer Paper : July 2015 iii. T

O

70

60 P

5.4 cm

M

Draw PMT of given measure Draw the perpendicular bisectors of side PM and side TM Draw circumcircle by taking O as centre

iv.

 v.

[1] [1]

L.H.S. = sec2 + cosec2 =

1 1  cos 2  sin 2 

=

sin 2   cos 2  cos 2   sin 2 

=

1 cos   sin 2 

=

1 1  cos 2  sin 2 

2



1

1



.... cos   ,sin   sec  cosec  

[½] [½]

.... [ sin2 +cos2  = 1]

[1] [½]

= sec2 ·cosec2  = R.H.S. 

[1]

[½]

sec2  + cosec2  = sec2 ·cosec2  Let A  (3, 11), B  (6, 2), C  (k, 4) Slope of a line =

y2  y1 x2  x1

For line AB: Let A  (3, 11)  (x1, y1), B  (6, 2)  (x2, y2) Slope of line AB =

2  11 9 9 = = = 1 6  (3) 6  3 9

.... (i)

[1]

.... (ii)

[1]

For line AC: Let A  (3, 11)  (x1, y1), C  (k, 4)  (x2, y2) Slope of line AC =

4 4

4  11 7 = k  ( 3) k  3

Geometry

  

4.



Since, points A, B and C are collinear, Slope of AB = Slope of AC



1 =

    

k  3 = 7 k = 7 + 3 k = 4 k=4 The value of k is 4.

7 k3

.... [From (i) and (ii)]

[1]

Solve any two sub-questions: i.

Given: ABCD is a cyclic quadrilateral.

A D

[½]

O B C To prove: BAD + BCD = 180, ABC + ADC = 180

[½]

Proof: mBAD =

1 m(arc BCD) 2

....(i) [Inscribed angle theorem]

[½]

m BCD =

1 m(arc BAD) 2

....(ii) [Inscribed angle theorem]

[½]

Adding equations (i) and (ii), we get mBAD + mBCD =

1 1 m(arc BCD) + m(arc BAD) 2 2



mBAD + mBCD =

1 [m(arc BCD) + m(arc BAD)] 2



BAD + BCD =



BAD + BCD = 180

1  360 2

[½]

....[Measure of a circle is 360] ....(iii)

[½]

BCD +BAD +ABC +ADC = 360

....[Sum of measures of angles of a quadrilateral]

[½]



180 + ABC + ADC = 360

....[From (iii)]



ABC + ADC = 360  180



ABC + ADC = 180

In ABCD,

Hence, the opposite angles of a cyclic quadrilateral are supplementary. A P ii. 30 45 E

30

[½]

C 24 m

45 B

D

[1]

5

Board Answer Paper : July 2015





  

Let AB represent the lighthouse and CD be the ship. CD = 24 m The distance of the ship from lighthouse is BD Draw ray AP || seg BD and CE  AB PAC and PAD are the angles of depression PAC = 30 and PAD = 45 Also, ACE = PAC = 30 ....[Alternate angles] ADB = PAD = 45 In ECDB B = D = 90 E = 90 ....[construction] C = 90 ....[Remaining angle of ECDB] ECDB is a rectangle BE = CD = 24 cm ....(i) EC = BD ....(ii) In ABD, tan ADB = tan 45 AB BD



tan 45 =



1=



AB = BD In AEC, tan ACE = tan 30



tan 30 =



1 AE = EC 3



1 AB  BE = EC 3



1 BD  24 = BD 3

AB BD

....(iii)

[½]

....[From (i), (ii) and (iii)]

[1]

AE EC



BD =

3 (BD  24)



BD =

3 BD  24 3



[½]

3 BD  BD = 24 3





BD



BD = =



3  1 = 24 3

24 3 3 1



24 3 ( 3  1)



3 1



3 1

=



24 3  3 2





= 12 3  3



= 36 + 12 3

 

6 6

= 36 + 12  (1.73) = 36 + 20.76 BD = 56.76 The distance of the ship from lighthouse is 56.76 m.

[1]

Geometry iii.

A(4,7)

F

E

B(2, 3)

D

C(0, 1)

Let A  (4, 7)  (x1, y1); B  (2, 3)  (x2, y2) and C  (0, 1)  (x3, y3) By midpoint formula,  x2  x3 y2  y3   2  0 3  1  , , =   2   2 2   2

D (x, y) = 

 2 4 

=  ,  = (1, 2)  2 2  x3  x1 y3  y1   0  4 1  7  , , =   2   2 2   2

E (x, y) = 

4 8

=  ,  = (2, 4) 2 2  x1  x2 y1  y2   4   2  7  3  , ,  =  2   2 2   2  4  2 10   2 10  ,  =  ,  = (1, 5) =  2 2 2 2 

F (x, y) = 

[1]

For Median AD: A  (4, 7)  (x1, y1) and D  (1, 2)  (x4, y4) Equation of median AD in two-point form is: x  x1 y  y1  x1  x4 y1  y4

     

x4 y7 = 4   1 7  2 x4 y7 = 4 1 5 x4 y7 = 5 5

x4=y7 xy4+7=0 xy+3=0 For median BE: B  (2, 3)  (x2, y2) and E  (2, 4)  (x5, y5) Equation of median BE in two-point form is:

....[Multiplying both sides by 5] [1]

x  x2 y  y2  x2  x5 y2  y5

    

x   2  y 3 = 2  2 3 4



x2 y 3 = 4 1

x + 2 = 4 (y  3) x + 2 = 4y  12 x  4y + 2 + 12 = 0 x  4y + 14 = 0 For median CF: C  (0, 1)  (x3, y3) and F  (1, 5)  (x6, y6) Equation of median CF in two-point form is:

[1]

x  x3 y  y3  x3  x6 y3  y6

7

Board Answer Paper : July 2015      5.

x0 y 1 = 0 1 1 5 x y 1 = 1 4

4x = y  1 4x  y + 1= 0 The equations of medians are x  y + 3 = 0; x  4y + 14 = 0; 4x  y + 1 = 0.

[1]

Solve any two sub-questions: 1 2

i.

Consider, 2ab = 2  A(XYZ)  YZ = 2  (  XZ  YP)  YZ



2ab = XZ  YP  YZ Consider, b4 + 4a2 = YZ4 + 4[A(XYZ)]2 1 2

.... (i)  

2

[1]

1 4

= YZ4 + 4   XY  YZ  = YZ4 + 4   XY2  YZ2  

 

2

2

In XYZ, XYZ = 90 YZ 2 + XY2 = XZ2 b4 + 4a2 = YZ 2  XZ2 b 4  4a 2 =



b  4a = YZ  XZ 2ab XZ  YP  YZ = 4 2 YZ  XZ b  4a 4

YZ2  XZ2

ii.

In ABC, A + B + C = 180 A+ 55 + 65 = 180 A + 120 = 180 A = 180  120 A = 60 ABC  LMN A = L = 60 B = M = 55



  

.... (ii)

[½]

.... (iii) [By Pythagoras theorem] .... [From (ii) and (iii)]

[½] [½]

.... [Taking square root on both sides] .... (iv)

[1]

4

b + 4a 2

AB BC AC = = LM MN LN AC 3 Since, = LN 5 AB BC 3 = = LM MN 5 AB 3 = LM 5 5.1 3 = LM 5



3  LM = 5.1  5



LM =

5.1 5 3

[½]

.... [Dividing (i) by (iv)]

2ab

YP =

 

 

2



   

[1]

b 4  4a 2 = YZ 2 + XY2 YZ2

 

8 8

= YZ4 + XY2  YZ2 b + 4a = YZ [YZ 2 + XY2] 4

.... [Sum of the measures of all angles of a triangle is 180]

[½]

[1] .... [Given] .... [c.a.s.t] ....

[½]

.... (i) [c.s.s.t]

[½]

.... (ii) [Given] .... [From (i) and (ii)]

[½]

Geometry  

LM = 8.5 cm In LMN, LM = 8.5 cm, M = 55, L = 60

[1]

N

[1]

L

60

55

M

8.5 cm

iii. Volume of cylinder = r2h Now, volume of ink filled in the cylindrical container = 71% of volume of cylindrical ink container 2 = 71% of  r1 h1 71    6  6  14 100 71 3614  cm3 .... (i) = 100

[½] [½]

=

Also, the volume of ink filled in the refill = 84 % of volume of the cylindrical refill = 84% of  r22 h 2 84 1 1     12 10 10 100 84 12  cm3 = 10000

[1] [½]

=

.... (ii)

[1]

Number of refills that can be filled with ink =

volumeof ink filledin cylindricalcontainer volumeof ink filledin the refill

71 36 14   100 = 84 12  10000 10000 71 36 14  =  = 71  50 84 12  100



[½]

.... [From (i) and (ii)]

= 3550 The number of refills that can be filled with ink is 3550.

[1]

9

Geometry

BOARD ANSWER PAPER : MARCH 2016  GEOMETRY  1.

Solve any five sub-questions: i.

DEF ~ MNK

....[Given]



A(DEF) DE 2  A( MNK) MN 2

....[By theorem on areas of similar triangles]



A(DEF) (2) 2  A( MNK) (5) 2



A(ΔDEF) 4  A(ΔMNK) 25

ii.

In ∆ABC, A = 30, C = 60, B = 90



[½]

[½]

....[Given]

∆ABC is a 30– 60– 90 traingle BC =

1 AC 2



BC =

1  16 2



BC = 8

iii.

PQS =

1 m (arc PMQ) 2

....[Tangent secant theorem]



PQS =

1  110 2

....[Given]



PQS = 55

iv.

 = –30

....[Given]

cos (–30) = cos 30

....[  cos (–) = cos ]

....[side opposite to 30]

[½]

[½]



cos (–30) =

v.

Slope = tan 

[½]

[½]

3 2

= tan 60 

Slope =

vi.

By using Euler’s formula,

3

F+V=E+2 

6 + V = 10 + 2



V = 12 – 6



V=6

[½] [½] [½]

....[ = 60] [½]

[½]

[½]

1

Board Answer Paper : March 2016 2.

Solve any four sub-questions: i. In PRQ Seg RS is the angle bisector of PRQ  

PS PR = SQ QR 9 18  6 QR

....[Given]

....[By property of angle bisector of a triangle]

[½]

18 6 9



QR =



QR = 12 units

ii.

C

[½] [½]

B

9

P A 12 Line AP is a tangent to the circle at A and line PC is a secant. .... [Tangent secant property] AP2 = CP  BP  (12)2 = CP  9  144 = CP  9 144  CP = 9  CP = 16 units BP + BC = CP .... [PBC]  9 + BC = 16  BC = 16  9  BC = 7 units

iii.

[½]

[½]

[½] [½]

[½]

A

E O

B

D

C

Draw ABC of given measure Draw the perpendicular bisectors of side BC and side

2 2

AC

[1]

Draw circumcircle by taking O as centre

[1]

Geometry iv.

Y P X

O

A

X

[½]

Y

  v.

The initial arm rotates by 130 in anti-clockwise direction. The angle is more than 90 and less than 180  AOP lies between 90and 180. The terminal arm lies in quadrant II.





radius  length of arc 2 9 =  16 2

[½]



=98 = 72 Area of sector is 72 cm2.

vi. 

Radius (r) = 1.4 cm Surface area of the sphere = 4r2

[½]

[1] [½]

22  1.4  1.4 =4 7

3.

= 4  22  0.2  1.4 Surface area of the sphere = 24.64 cm2

Solve any three sub-questions: i. 17 cm A 11 cm

B

         

1 OB = BD 2 1 OB =  26 2

[½] [1]

D

O C

Let ABCD be the parallelogram and its diagonals AC and BD intersect each other at O. AB = 11 cm, AD = 17 cm, BD = 26 cm 

[1]

Radius (r) = 9 cm length of arc (l) = 16 cm Area of sector =



[½]

[½]

.... [Diagonals of a parallelogram bisect each other]

OB = 13 cm In ABD, O is the midpoint of diagonal BD seg AO is the median of ABD AB2 + AD2 = 2OA2 + 2OB2 (11)2 + (17)2 = 2OA2 + 2(13)2 121 + 289 = 2OA2 + 2  169 410 = 2(OA)2 + 338 410  338 = 2OA2 72 = 2OA2

.... (i)

[½]

.... [Diagonals of a parallelogram bisect each other] .... [By Apollonius theorem]

[½] [½]

72 = OA2 2

3

Board Answer Paper : March 2016  

  

OA2 = 36 OA = 6 cm

.... (ii) [Taking square root on both sides]

1 OA = AC 2 1 6 = AC 2

[½]

.... [Diagonals of a parallelogram bisect each other] .... [From (ii)]

AC = 12 cm The length of the other diagonal is 12 cm.

[½]

ii. a.

mPQR =

1 m(arc PCR) 2



mPQR =

1  26 2



mPQR = 13

....(i)

b.

1 mSPQ = m(arc QDS) 2

.... [Inscribed angle theorem]



mSPQ =



mSPQ = 24 SRQ  SPQ .... [Angles subtended by the same arc are congruent] SRQ = 24 .... (ii) With respect to ARQ, SRQ is the exterior angle. SRQ = RAQ + AQR .... [Remote interior angle theorem] 24 = RAQ + 13 .... [From (i) and (ii)] RAQ = 24  13 mRAQ = 11

 c.     iii.

.... [Inscribed angle theorem] .... [Given] [1]

1  48 2

[1]

[1]

A

l

O

K

B

i. P

4 4

For drawing a circle of radius 3.5 cm ii. For drawing chord BK iii. For drawing BAK iv. For drawing BKP

[½] [½] [1] [1]

Geometry



iv.

sec  =

2 3



cos  =

1 3 = 1 = sec  2  2

.... [Given] 

   3



 

.... cos  

1   sec  

3 2



cos  =



sin2  + cos2  = 1





sin2  + 









3 =1 4 3 sin2  = 1  4 43 2 sin  = 4 1 2 sin  = 4 1 sin  =  2

[½]

2

 









 3  = 1  2 

sin2  +



But,  lies in the quadrant IV. sin  is negative.



sin  = 

.... [Taking square root on both sides]

1 2

cosec  =

1 sin 



cosec  =

1 = 2  1    2



cosec  = 2 Consider,

[1]

[½]

[½]

3 1  cos ec  1  ( 2) 1  2 = = = = 3 1  cos ec  1  ( 2) 1  2 1



 v.

 



     

1  cosec = 3 1  cosec

Let P  (2, 3)  (x1, y1), Q  (4, 7)  (x2, y2) The line passes through points P and Q. Equation of line in two-point form is: x  x1 y  y1 = x1  x2 y1  y2 x2 y 3 = 2 4 37 x2 y 3 = 2 4

 4 (x  2) =  2 (y  3)  4x + 8 =  2y + 6 2y = 4x + 6  8 2y = 4x  2 y = 2x  1 .... [Dividing both sides by 2] y = 2x  1 is the required equation of line which is of the form y = mx + c.

[½] [½]

[½] [½]

[½]

[1]

5

Board Answer Paper : March 2016 4.

Solve any two sub-questions: i. Given: A circle with centre O, an external point P of the circle. The two tangents through the point P touch the circle at the points A and B. To prove: PA = PB Construction: Draw seg OA, seg OB and seg OP.

[½] [½] [½]

A O

[½]

P B

 

ii.

Proof: PAO = PBO = 90 ....[Tangent is perpendicular to radius.] In the right angled  PAO and the right angled PBO, seg OA  seg OB ....[Radii of the same circle] hypotenuse PO  hypotenuse PO ....[Common side] PAO  PBO ....[Hypotenuse side test] seg PA  seg PB ....[c.s.c.t.] PA = PB Hence, the lengths of the two tangent segments drawn to a circle from an external point are equal.

[½] [½] [½] [½]

A

[½] 60

B







30 40 m

C

Let AB represent the height of the tree and BD represent the width of river. D and C are the initial and final positions of the observer. DC = 40 m ADB and ACD are the angles of elevation. ADB = 60 and ACD = 30    In right angled ABD, tan 60 =



D

3=

AB =

[½]

AB BD 3 BD

tan 30 =

6 6



AB BD

.... (i)

In right angled ABC,





AB BC



AB 1 = 3 BD  DC



AB 1 = BD  40 3

.... [BDC]

[½]



Geometry BD  40 =AB 3









  

   

3 BD  3 = BD + 40 3BD = BD + 40 3BD  BD = 40 2BD = 40





BD =





BD = 20 m Now, AB =



  

3 BD =

BD  40 3

.... (ii)

[½]

.... [From (i) and (ii)]

[½]

.... [From (i)]

[½] [½]

40 2 3 BD = 3  20

AB = 20 3 = 20  1.73 AB = 34.6 m The height of the tree is 34.6 m and width of the river is 20 m.

iii.

[½]

A(5,4)

[½] P B(3,2)

D(x, y) C(1,8)

Let A  (5, 4)  (x1, y1); B  (3, 2)  (x2, y2) and C  (1, 8)  (x3, y3). D  (x, y) is the midpoint of BC. By midpoint formula, 

 x2  x3 y2  y3  ,  2   2

D (x, y) = 

 3  1 2  8   2 10  , = ,  = (1, 5) 2   2 2   2

=

[½]

Let D (1, 5)  (x4, y4) For Median AD: The equation of the median AD in two-point form is: x  x1 y  y1  x1  x4 y1  y4

[½]



x5 y4 = 5   1 4   5 

[½]



x5 y4 = 5 1 45



x5 y4 = 6 9



x5 y4 = 2 3

.... [Multiplying both the sides by 3]

3 (x  5) = 2 (y  4) 

3x  15 = 2y  8

7

Board Answer Paper : March 2016 

3x  2y  15 + 8 = 0



3x  2y  7 = 0

[½] 4   8  y1  y3 = 5 1 x1  x3

Slope of line AC =

48 12 = =3 4 4

=

[½]

The slope of parallel lines are equal. 

Slope of line (l) = Slope of line AC = 3 By slope-point form, equation of line l passing through B  (3, 2)  (x1, y1) and having slope (m) = 3 is:

[½]

y  y1 = m (x  x1) 

y  (2) = 3 [x  (3)]



y + 2 = 3 (x + 3)



y + 2 = 3x + 9



3x + 9  y  2 = 0



3x  y + 7 = 0.

[½]

The equation of median AD is 3x  2y  7 = 0 and the equation of the line parallel to AC and passing through point B is 3x  y + 7 = 0. 5.

Solve any two sub-questions: i.

In ABF, EB = EF = a

.... [Given]



E is midpoint of seg BF.



seg AE is the median 2

2

2



AB + AF = 2AE + 2EB



AB2 + a2 = 2a2 + 2a2 2

2

[½] 2

.... [By Apollonius theorem]

[½] [½]

2



AB + a = 4a



AB2 = 4a2  a2



AB2 = 3a2



AB = 3 a

.... [Taking square root on both sides]

[1]

In ACE FC = FE = a 

F is the midpoint of seg EC



seg AF is the median



AE2 + AC2 = 2AF2 + 2FC2



8 8

.... [Given]

2

2

2

2

2

[½] .... [By Apollonius theorem]

2

a + AC = 2a + 2a 2



AC + a = 4a



AC2 = 4a2  a2



AC2 = 3a2



AC =



AB = AC =

3a

[½]

.... [Taking square root on both sides] 3a

[½]

[1]

Geometry ii.

U U

[1]

R

S

4.5 cm

H

V

R

Analytical figure



S

4.5 cm

 H

V

S1 o

S2

S3 o

S4

S5

X

Draw SHR of given measure Draw a ray making an acute angle at S with side SV, mark points S1, S2, …., S5 such that SS1 = S1S2 = S2S3 = S3S4 = S4S5 Join S3 and H and draw seg S5V parallel to S3H, where V is the point on extended SH Draw VU || side HR SVU is the required triangle similar to SHR. iii.

For the cylindrical pipe: diameter = 20 mm



radius =



Rate of flow of water through the pipe = 15 m/minute = 15  100 cm/minute = 1500 cm/minute Water flow’s through a distance (h) of 1500 cm in a minute

diameter 20 = = 10 mm = 1cm 2 2

[1]

[½] [1] [1] [½]

[½]

[½]

9

Board Answer Paper : March 2016 Volume of water flowing through the pipe in 1 minute = r2h =   1  1  1500 = 1500  cm3 For the conical vessel: diameter = 40 cm 

radius =

diameter 40 = = 20 cm 2 2

[½] [½]

[½]

depth (h) = 45 cm   volumeof conical vessel Time taken to fill the conical vessel = volumeof water flowing through pipe in1minute 1 3

1 3

Volume of conical vessel = r2h =     20  20  45  cm3

[1] [½]

1    20  20  45   20  20  45 = = 3 3    1500 1500 6000 = 1500



10 10 

= 4 min Time taken to fill the conical vessel is 4 min.

[1]