Chemistry Group VA and VIA Elements Online Mcqs Test

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Question 1

1. Which statement about oxygen and sulphur is not true?

Answer

Both combine with metals to form O²¯ and S²¯

Answer

Both are usually divalent

Answer

Both exhibit allotropic form

Answer

Both are paramagnetic

Question 2

2. White P when boiled with strong solution of caustic soda produces?

Answer

Phosphorous acid

Question 3

3. The structure of white phosphorus is

Answer

Tetrahedral

Answer

Square planar

Answer

Trigonal planer

Question 4

4. Nitrogen and phosphorus forms compounds

Answer

Covalent as well as ionic frequently

Answer

Nitrogen forms covalent and phosphorus ionic

Question 5

5. Phosphine is not obtained by the reaction when

Answer

Ca₂P₂ reacts with water

Answer

White P is heated with NaOH

Answer

PH₄I is boiled with water

Answer

Red P is heated with NaOH

Question 6

6. Which one has no allotropes?

Answer

Phosphorus

Question 7

7. Which one of the following pentafluorides cannot be formed?

Question 8

8. Each of the following is true of white and red phosphorus except that they

Answer

Can be oxidized by heating in air

Answer

Consist of the same kind of atoms

Answer

Can be converted into one another

Answer

Are both soluble in CS₂

Question 9

9. At room temperature fluorine is

Answer

Pale yellow gas

Answer

Shiny grayish

Answer

Red brown liquid

Answer

Greenish yellow gas

Question 10

10. Which of the following has only oxidation state 3?

Question 11

11. When H2 SO 4one reacts with oxalic acid it acts as

Answer

As a drying agent

Answer

Oxidizing agent

Answer

Reducing agent

Question 12

12. Which gas has a pungent smell?

Question 13

13. Out of all elements of group VA, the highest melting and boiling points is shown by the elements

Question 14

14. NO₂ o dissolution in water produce

Answer

HNO₃ and HNO₂

Answer

HNO₂ and NO

Question 15

15. Nitrogen is not present in

Answer

Amino acids

Answer

Fatty acids

Question 16

16. For a reaction N₂O₃ + H₂O → 2HNO₂, the temperature required for this reaction is

Question 17

17. Ozone is not

Answer

A bent molecule

Answer

A powerful oxidizing agent

Answer

An allotrope

Answer

Paramagnetic

Question 18

18. Which of the following elements does not form stable diatomic molecules?

Answer

Phosphorus

Question 19

19. Which of the following is formed by the action of water on sodium peroxide?

Question 20

20. Out of all elements of group VA, the highest ionization energy is possessed by

Question 21

21. Which acid is prepared by Birkland’s and Ryde’s method?

Question 22

22. Sodium hexametaphosphate is known as

Question 23

23. Atmospheric N2 and O2 react to give nitric oxide in an electric are temperature required is

Question 24

24. Dinitrogen pentaoxide has oxidation no of nitrogen

Question 25

25. Which element form group 15 gives most basic compound with hydrogen?

Answer

Phosphorus

Question 26

26. Oleum is

Answer

Oil of vitriol

Answer

Fuming of H₂SO₄

Answer

None of these

Answer

Castor oil

Question 27

27. The electronegativity of the following elements increases in the order

Answer

N, Si, C, P

Answer

P, Si, N, C

Answer

C, N, Si, P

Answer

Si, P, C, N

Question 28

28. When SO₂ is passed through acidified K₂Cr₂O₇ solution?

Answer

Green Cr₂(SO₄)₃ is formed

Answer

The solution is decolourised

Answer

SO₂ is reduced

Answer

The solution turns blue

Question 29

29. Laughing gas is

Question 30

30. Which of the following fluorides does not exist?

Question 31

31. Which of the following group VA elements is gas at room temperature?

Question 32

32. Which of the following elements is most metallic?

Question 33

33. One of the following is radioactive metal

Question 34

34. Chlorine is used for

Answer

All of these

Answer

As a bleaching agent

Answer

Extraction of gold

Answer

Purification of water

Question 35

35. Which one of the following elements occurs free in nature?

Question 36

36. White phosphorus is

Answer

A linear diatomic molecule

Answer

P₅, a crown

Answer

A mono atomic gas

Answer

P₄, a tetrahedral solid

Question 37

37. BiCl₃ on hydrolysis forms a white precipitate of

Answer

Bismuth oxychloride

Answer

Bismuthio acid

Answer

Bismuth pent chloride

Answer

Bismuth hydroxide

Question 38

38. Which catalyst is used in contact process?

Question 39

39. Nitrogen is a gas while other elements of the same group are

Answer

Semiliquid

Question 40

40. Sulphuric acid is anhydride of

Answer

Hydro Sulphuric acid

Answer

Hyposulphuric acid

Answer

Sulphurous acid

Answer

Sulphuric acid

Question 41

41. Relatively pure sulphuric acid is manufactured by

Answer

Contact process

Answer

Haber’s process

Answer

Lead chamber process

Answer

Castner’s process

Question 42

42. Oxidation of NO in air produces

Question 43

43. Phosphorus pentoxide finds use as

Answer

A dehydrating agent

Answer

A bleaching agent

Answer

An oxidizing agent

Answer

A reducing agent

Question 44

44. Which of the element of ( V ) group is metal?

Question 45

45. The highest M.P. is possessed by in vi A group

Question 46

46. Ring test is used for confirmation of

Answer

Phosphates

Question 47

47. Which one is colored among the following?

Answer

None of these

Question 48

48. Which gas is produced when HNO₂ reacts with organic compounds contains NH₂ group?

Question 49

49. All elements of VI A group are

Answer

Metalloids

Answer

Non-metals

Question 50

50. Relative sulphuric acid is manufactured by

Answer

Contact process

Answer

Haber’s process

Answer

Lead chamber process

Answer

Castoner’s process

Question 51

51. The brown gas formed when metal reduces HNO₃

Question 52

52. Group VA of the periodic table consists of the elements N, P, As, Sb and Bi, On passing from N to Bi, the oxides of the elements of general formula M₂O₃ become

Answer

More basic

Answer

More ionic

Answer

Stronger reducing agents

Answer

More volatile

Question 53

53. Sulphur trioxide is an anhydride of

Answer

Sulphurous acid

Answer

Hydro sulphuric

Answer

None of these

Answer

Sulphuric acid

Question 54

54. Red P can be obtained from white P by

Answer

Dissolving it in CS₂ and crystallizing

Answer

Melting it ad pouring the liquid into water

Answer

Heating it with a catalyst in an inert atmosphere

Answer

Distilling it in an inert atmosphere

Question 55

55. An element that has a high ionization energy and tends to be chemically inactive would most likely to be

Answer

A noble gas

Answer

A transition element

Answer

An alkali metal

Question 56

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Total Questions:	55
Time Allowed:	30 Minutes
Total Marks:	55
How to Attempt Test:	Please choose the right Option in MCQ-type question.
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