Tenth Class

Bit Bank

Physical Science

9. Classification of Elements- The Periodic Table Multiple Choice Questions 1. Number of elements present in period – 2 of the long form of periodic table A) 2 B) 8 C) 18 D) 32

[ B

]

2. Nitrogen (Z = 7) is the element of group V of the periodic table. Which of the following is the atomic number of the next element in the group? [ C A) 9 B) 14 C) 15 D) 17

]

3. Electron configuration of an atom is 2, 8, 7 to which of the following elements would it be chemically similar? [ B A) nitrogen(Z=7) B) fluorine(Z=9) C) phosphorous(Z=15) D) argon(Z=18)

]

4. Which of the following is the most active metal? A) lithium B) sodium C) potassium

[ D ] D) rubidium

5. Number of elements present in 1st period of modern periodic table ___________ A) 2 B) 8 C) 18 D) 32

[ A ]

6. Which of the following is the most active element? A) lithium B) sodium C) potassium

[ A ] D) rubidium

7. The element with electronic configuration 2, 8, 8, 3 belongs to --- block A) s B) p C) d D) d

[ C ]

8. The incompletely filled period is ____________________ A) 5 B) 7 C) 4

[ B D) 6

9. Mandeleeff’s eka – aluminum is _______________ A) Scandium B) Zinc C) Gallium

D) Germanium

]

[ C ]

10. S and p- block elements are called _______________ A) Representative elements B) Transition elements C) Inner transition elements D) Zero group elements

[ A ]

11. Elements with electronic configuration ns2 np6 are called_______________ A) Representative elements B) Transition elements C) Inner transition elements D) Zero group elements

[

D ]

12. Name given to IV group element family is _______________ A) ns2 B) ns2 np2 C) ns2 np4

[

B

D) ns1

13. Most electro negative element is _______________ A) chlorine B) Nitrogen C) Flourine

D) oxygen

14. Units for Ionization energy_______________ A) Ergs B) KJ C)KJ mole-1

D) Moles

15. IE2 ____________IE ____________ 1 A) <

[ C ]

[ C ]

[ B) =

C) >

C ]

D) None

16. d- block elements are called _________________ A) Transition B) Inner transition C) Alkali metals 17. f- block elements are called _________________ A) Transition B) Inner transition

]

[ A

]

[ B D) Alkaline matals

]

D) Alkaline metals

C) Alkali metals

Prepared by :- Gali Sreekar M.Sc, M.Sc, B.Ed Chirala mandal, Prakasam.

9440234404

27

Tenth Class

Bit Bank

Physical Science

18. Ionization energy is expressed in ____________ (or) ___________ A) kJ mol-1 (or) ev. B) k mol-1 (or) ev. C) J mol-1 (or) ev.

D) k J (or) ev.

19. Metals are ____________ elements. A) Electronegative B) Ionization

[ C ] D) Electron affinity

C) Electropositive

20. Electro negativity was measured in _________ Scale. A) Pauling scale B) Meter scale C) PH scale

[ A ]

[ A ] D) None of these

21. The ‘4f’ elements are called ______________ A) Lanthanoids B) Actinides

[ A ] C) s- block elements D) p- block elements

22. The ‘5f’ elements are called ______________ A) Lanthanoids B) Actinides

[ B ] C) s- block elements D) p- block elements

23. The group of elements is also called ____________ or ________________ A) element family or chemical family. B) Noble gas family C) s- block family D) p- block family

[ A

]

24. Group1 (IA) elements are called ___________ A) Alkali metal family B) Alkali earth metal family C) Boron family

[ A ] D) Carbon family

25. Group2 (IIA) elements are called ___________ A) Alkali metal family. B) Alkali earth metal family C) Boron family

[ B ] D) Carbon family

26. Group 13 (IIIA) elements are called _________________ A) Alkali metal family. B) Alkali earth metal family C) Boron family

[ C ] D) Carbon family

27. Group 14 (IVA) elements are called _________________ A) Alkali metal family. B) Alkali earth metal family C) Boron family

[ D ] D) Carbon family

28. Group 15 (VA) elements are called ____________ A) Nitrogen family.

[ A

B) Chalcogen family

D) Noble gas family

C) Halogen family

D) Noble gas family

29. Group 16 (VIA) elements are called ____________ A) Nitrogen family.

[ B

B) Chalcogen family

30. Group 17 (VIIA) elements are called ____________ A) Nitrogen family. B) Chalcogen family

C) Halogen family

D) Noble gas family

C) Halogen family

D) Noble gas family

[ D ]

B) Chalcogen family

32. Mandeleeff periodic table is based on _____________ A) Atomic weight

B) Atomic radius

[ A ]

C) Size of the element

D) None of these

33. Modern periodic table is based on _____________ A) Atomic weight

]

[ C ]

31. Group 18 (VIIIA) elements are called ____________ A) Nitrogen family.

]

C) Halogen family

B) Atomic radius C) Size of the element

[ D ] D) Atomic number

34. In his honour of Mendeleeff the 101th element was named as _____________ A) Mendelevium B) Scandium C) Germenium

D) Gallium

35. The predicted properties of elements namely eka-boron as_____________ A) Scandium B) Gallium C) Germanium

[ A ] D) Mendelevium

36. The predicted properties of elements namely eka-aluminium as_____________ A) Scandium B) Gallium C) Germanium

[ B ] D) Mendelevium

37. The predicted properties of elements namely eka-silicon as_____________ A) Scandium B) Gallium C) Germanium

[ C ] D) Mendelevium

Prepared by :- Gali Sreekar M.Sc, M.Sc, B.Ed Chirala mandal, Prakasam.

[ A ]

9440234404

28

Tenth Class

Bit Bank

Physical Science

38. Electron affinity of an element is also called ______________of that element. A) Electron gain enthalpy B) Electropositive enthalpy

C) Ionization potential

[ A ]

D) None of these

39. Li, Na, K are examples for_______________ A) Dobereiner traid B) Newland law of octaves

C) Mendeleeff law

[ A ] D) None of these

40. Law of octaves was proposed by ______________ A) Newland B) Dobereiner

C) Mendeleeff

[ B ] D) J.J Thomson

41. The incomplete period of the modern periodic table is ____________ A) 2th period B) 5th period C) 6th period

[ D ] D) 7 period th

42. The distance between the nucleus and outer most shell is known as ____________ [ A ] A) Atomic radius B) Atomic weight C) Valence D) Atomicity 43. __________ is the most electronegative element. A) Flourine B) Chlorine

C) Bromin

[ A ] D) Iodinm

44. Mandeleeff periodic table is based on ____________________ A) Atomic number B) Atomic weight C) Valence

[ B ] D) Atomicity

45. Electronegitivity is measured in ________________scale. A) Pauling scale B) Ordinary scale

[ A ] D) None

C) Both

46. How many groups are present in long form of periodic table? A) 15 B) 14 C) 17

D) 18

[ D ]

47. 5f elements are called ________________ A) Rare gases B) Actinides

[ B D) None

C) Lanthanides

48. Modern periodic table is based on ______________ A) Atomic Volume B) Atomic Weight C) Ionization potential D) Electronic Configuration

[ D ]

49. 101 element was named as in honour of a scientist _______________ A) Mendelevium B) Einsteinium C) Rutherfordium 50. The element with highest electro negativity is _______________ A) F B) Cl C) Ca

]

[ A ] D) Bohr [ A ]

D) Ar

51. General electronic configuration of Noble gases _______________ A) ns1 B) ns2np5 C) ns2np6 D) ns2np6, nd5

[ C ]

52. The longest period in the periodic table is ______________ A) 4 B) 7 C) 5

[ D ] D) 6

53. Predicted properties of Eka-Silicon is close to the observed property of _____________ [ A ] A) Germanium B) Scandium C) Gallium D) Sodium 54. 1 Pm = ___________ A) 10-8 m

-10

B) 10

m

55. Who proposed law of Octaves? A) Dobereiner B) New Land

-12

C) 10

m

-14

D) 10

[ C ] m [

C) Bohr’s

B ]

D) Mendeleev

Prepared by :- Gali Sreekar M.Sc, M.Sc, B.Ed Chirala mandal, Prakasam.

9440234404

29