Tenth Class
Bit Bank
Physical Science
14. Carbon and its Compounds Multiple Choice Questions 1. Which of the four test tubes containing the following chemicals shows the brisk effervescence when dilute acetic acid was added to them? [ B iii) K2CO3 iv) NaCl i) KOH ii) NaHCO3 A) i& ii B) ii & iii C) i & iv D) ii & iii
]
2. Which of the following solution of acetic acid in water can be used as preservative? A) 5-10% B) 10-15% C) 15-20% D) 100%
[ A ]
3. The suffix used for naming an aldehyde is A) -ol B) -al
[ B C) -one
]
D) –ene
4. Acetic acid, when dissolved in water, it dissociates into ions reversibly because it is a, A) Weak acid B) strong acid C) weak base D) strong base
[ A ]
5. Which one of the following hydrocarbon can show isomerism? B) C2H6 C) C3H8 A) C2H4
[ D ] D) C4H10
6. Combustion of hydrocarbon is generally accompanied by the evolution of A) Heat B) Light C) both heat and light D) Electric current.
[ C ]
7. 2ml of ethanoic acid was taken in each of the three test tubes A, B and C and 2ml, 4ml and 8ml water was added to them, respectively. A clear solution is obtained in: [ D ] A) Test tube A only B) Test tubes A & B only. C) Test tubes B and C only D) All the test tubes. 8. If 2 ml of acetic acid was added slowly in drops to 5ml of water then we will notice [ C ] A) The acid forms a separate layer on the top of water. B) Water forms a separate layer on the top of the acid. C) Formation of a clear and homogenous solution. D) Formation of a pink and clear solution. 9. A few drops of ethanoic acid were added to solid sodium carbonate. The possible results of the reactions are___________ [ C ] A) A hissing sound was evolved B) Brown fumes evolved. C) Brisk effervescence occurred. D) A pungent smelling gas evolved. 10. When acetic acid reacts with ethyl alcohol, we add conc. H2SO4, it acts as___________and the process is called___________ [ B ] A) Oxidizing agent, Saponification B) Dehydrating agent, Esterification C) Reducing agent, Esterification D) Acid & Esterification 11. Bond angle in CH4 is ______________ A) 109° 28' B) 107° 48'
C) 104° 31'
12. Which of these is not a crstalline form of carbon? A) Diamond B) Coal C) Graphite
[ A
]
[ B D) Buckminster fullerence
]
D) 120°
13. The functional group indicates carboxylic acid is ______________ A) – COOR B) –COOH C) –CHO D) –C = 0
[ B
14. The suffix used for naming an aldehyde is______________ A) –0l B) –al C) –One
[ D) –ene
15. Which one of the following hydrocarbon can show isomerism ? B) C2H6 C) C3H8 A) C2H4
D) C4H10
]
B ]
[ D ]
16. The general formula of homologous series of 'Alkenes' is______________ A) Cn H2n+2 B) CnH2n C) Cn H2n – 2 D) C2n Hn + 2
Prepared by :- Gali Sreekar M.Sc, M.Sc, B.Ed Chirala mandal, Prakasam.
[ B
9440234404
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42
Tenth Class
Bit Bank
Physical Science
17. When acetic acid reacts with ethyl alcohol, we add conc. H2SO4, it acts as _______ and the process is called______________ [ B ] A) Oxidizing agent, saponification B) Dehydrating agent, esterification C) Reducing agent, esterification D) Acid & esterification 18. A few drops of ethanoic acid were to solid sodium carbonate. The possible results of the reactions are ______________ [ C ] A) A hissing sound was evolved B) Brown funes evolved C) Brisk effer vescence occurred D) A pungent smelling gas evolved 19. Which of the following solution of Acetic acid in water can be used as preservative? A) 5 – 10% B) 10 – 15% C) 15 – 20% D) 100%
[
A ]
20. Which are of the following hydrocarbon can shown isomerism? A) C2H4 B) C2H6 C) C3H8
[ D ] D) C4H10
21. A fens drops of ethanoic acid were added to solid sodium carbonate the possible results of the reactions are ______________ [ C ] A) A hissing sound was evolved B) Broun‟s fames evolved C) Brisk effervescence occurred D) A pungent smelling gas evolved. 22. The suffix used for naming an aldehyde is______________ A) -0l B) –al C) –One
[ B
]
D) –ene
23. When acetic acid reacts with ethyl alcohol, we add Con. H2SO4 it acts as _______ and the process is called ___________________ [ B ] A) Oxidizing agent, sapanification B) Dehydrating agent, esterification C) Reducing agent, esterification D) Acid, esterification 24. The general formula of a alkane is ______________ A) Cn H2n+2 B) Cn H2n-2 C) CnH2n 24. Which of the following is Marsh gas? A) Methanal B) Methanol
[ A ] D) Cn H2n+1 [
C) Methanoic Acid
D ]
D) Methane
25. The amorphous allotrope of carbon is ___________ A) Diamond B) Graphite C) Coal
[ C ] D) Buck Minster fullerene
26. The bond angle in Acetylene molecules is _____________ B) 1800 C) 1200 A) 1090.281
D) 900
[ B
]
27. The first organic compound synthesized in the laboratory is ____________ A) Ammonia B) Alcohol C) Urea D) Acetic Acid
[
28. A spherical aggregate of soap molecules in water is called___________ A) micelle B) Dirt C) Suspensions D) Colloidal
[ A ]
29. Which of the following is used as a preservative in pickels? A) Vinegar B) Ammonia C) Hydrochloric acid D) Nitric acid Acid
[ A
]
30. Which of the following is a dehydrating agent? B) C2H6 C) C3H8 A) C2H4
[ D
]
D) H2SO4
31. Hybridisation deals with____________ A) Electrons B) Orbitals
[ B
]
D) None of them [A
]
C) Both
32. Soaps give a true solution at particular concentration known as _______________ A) CMC B) Dirt C) Suspensions D) Colloidal
Prepared by :- Gali Sreekar M.Sc, M.Sc, B.Ed Chirala mandal, Prakasam.
C ]
9440234404
43
Tenth Class
Bit Bank
33. 10% ethanol in gasoline is known as _______________ A)Gasolin B) Gasohol C) Glycerin
Physical Science [
B ]
[
C ]
D) None of these
34. A spherical aggregate of soap molecules in water is called ________________ A) CMC B) Dirt C) Micelle D) Colloidal
35. A sweet odour substance formed by the reaction of an alcohol and a carboxylic acid ___ [ D ] A) CMC B) Dirt C) Suspensions D) Ester 36. Valence of carbo atom is __________________ A) 1 B) 2 C) 3
[ D ] D) 4
37. The different forms of the element are called_______________ A) Allotropes B) Catination C) Isomerism
[ A D) Isomers
38. Spherical fullerenes are also called_______________ A) Graphene B) Buckyballs C) Nanotubes
D) Isomers
39. Which of the following is a bad conductor of electricity? A) Diamond B) Graphite C) Iron
D) None of these
[
]
B ]
[ A ]
40. The chemical formula of Ammonium cyanate is _______________ A) NHCNO B) NH2CNO C) NH3CNO D) NH4CNO
[ D ]
41. The chemiclal formula of urea is _______________ A) CO (NH2)2 B) CO (NH2)3 C) CO (N32)2
[ A ]
42. The chemical formula of stearic acid is _________ A) C17H35COOH B) C17H34COOH C) C17H33COOH
D) CO (NH4)2 [ A ] D) C17H30COOH
43. Hydrocarbons having the general formula CnH2n + 2 are called ______________ A)Alkanes B) Alkenes C) Alkynes D) Alkyles
[ A ]
44. The hydrocarbons that contain –OH group are called______________ A) Alcohols B) Amines C) Acids D) Aldehydes
[ A ]
45. Alkaline hydrolysis of tristers of higher fatty acids producing soaps is called ______ A) Estarification B) Saponification C) Fatty acids D) Fatty alcohols
[
46. The hydrocarbons with functional group –CHO are called ______________ A) Alcohols B) Amines C) Acids D) Aldehydes
[ D
47. The hydrocarbons with functional group C=O are called ____________ A) Alcohols B) Amines C) Ketones D) Aldehydes
[
C ]
48. The common system of the Butane is ____________ A) n-butane B) Iso-butane C) Methyl butane
[
A ]
D) Ethyl butane
49. The common system 2-methyl propane is ____________ A) n-butane B) Iso-butane C) Methyl butane
[
B ]
D) Ethyl butane
50. Type of reactions shown by alkanes is ____________ A) Substitution B) Addition C) Both A and B
D) None of these
B ]
[ B
Prepared by :- Gali Sreekar M.Sc, M.Sc, B.Ed Chirala mandal, Prakasam.
9440234404
]
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