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ECAT Chemistry Group VA and VIA Elements Test Online

Maan AliLast Updated: April 19, 2025

Chemistry Group VA and VIA Elements MCQS Online Test

ECAT Chemistry Group VA and VIA Elements Chapter Online Test

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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ECAT Chemistry Group VA and VIA Elements Test

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Page 1 of 3

Chemistry

1. Which one has no allotropes?

Arsenic

Nitrogen

Phosphorus

Antimony

2. Which of the following elements is most metallic?

3. The structure of white phosphorus is

Trigonal planer

Tetrahedral

Pyramidal

Square planar

4. NO₂ o dissolution in water produce

HNO₃

HNO₂ and NO

HNO₂

HNO₃ and HNO₂

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

Nitrogen

Iodine

Phosphorus

Oxygen

6. Relatively pure sulphuric acid is manufactured by

Contact process

Castner’s process

Lead chamber process

Haber’s process

7. The brown gas formed when metal reduces HNO₃

N₂O

NO₂

N₂O₅

8. Laughing gas is

N₂O₃

N₂O

NO₂

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

Semisolid

Liquids

Semiliquid

Solids

10. Ring test is used for confirmation of

Arsenates

Phosphates

None

Nitrates

11. Sodium hexametaphosphate is known as

Natalite

Permutite

Nitrolim

Calgon

12. Nitrogen is not present in

Fatty acids

Amino acids

Urea

Proteins

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

Phosphorus

Arsenic

Nitrogen

Bismuth

14. Ozone is not

A bent molecule

A powerful oxidizing agent

Paramagnetic

An allotrope

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

AsF₅

PF₅

BiF₅

SbF₅

16. Red P can be obtained from white P by

Dissolving it in CS₂ and crystallizing

Melting it ad pouring the liquid into water

Distilling it in an inert atmosphere

Heating it with a catalyst in an inert atmosphere

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

18. Which of the following fluorides does not exist?

PF₅

AsF₅

SbF₅

NF₅

19. Dinitrogen pentaoxide has oxidation no of nitrogen

20. One of the following is radioactive metal

21. Nitrogen and phosphorus forms compounds

Nitrogen forms covalent and phosphorus ionic

Covalent as well as ionic frequently

Covalent

Ionic

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

Si, P, C, N

P, Si, N, C

C, N, Si, P

N, Si, C, P

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

2000 C

3000 C

300 C

200 C

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

Reducing agent

As a drying agent

As acid

Oxidizing agent

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

Both exhibit allotropic form

Both combine with metals to form O²¯ and S²¯

Both are usually divalent

Both are paramagnetic

Page 2 of 3

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

Consist of the same kind of atoms

Can be oxidized by heating in air

Can be converted into one another

Are both soluble in CS₂

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

28. Relative sulphuric acid is manufactured by

Castoner’s process

Lead chamber process

Contact process

Haber’s process

29. Oleum is

Fuming of H₂SO₄

Castor oil

Oil of vitriol

None of these

30. BiCl₃ on hydrolysis forms a white precipitate of

Bismuth oxychloride

Bismuth hydroxide

Bismuth pent chloride

Bismuthio acid

31. 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

More basic

More ionic

Stronger reducing agents

More volatile

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

0°C

250°C

25 °C

450°C

33. White phosphorus is

A mono atomic gas

A linear diatomic molecule

P₄, a tetrahedral solid

P₅, a crown

34. Phosphine is not obtained by the reaction when

PH₄I is boiled with water

Red P is heated with NaOH

Ca₂P₂ reacts with water

White P is heated with NaOH

35. Which gas has a pungent smell?

NO₂

N₂O₃

N₂O

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

H₂

CO₂

O₂

N₂

37. Oxidation of NO in air produces

N₂O

N₂O₃

N₂O₄

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

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

A transition element

A halogen

A noble gas

An alkali metal

40. Chlorine is used for

Purification of water

All of these

Extraction of gold

As a bleaching agent

41. At room temperature fluorine is

Red brown liquid

Shiny grayish

Greenish yellow gas

Pale yellow gas

42. Sulphuric acid is anhydride of

Hydro Sulphuric acid

Sulphurous acid

Sulphuric acid

Hyposulphuric acid

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

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

45. Phosphorus pentoxide finds use as

An oxidizing agent

A bleaching agent

A reducing agent

A dehydrating agent

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

Posh acid

Phosphine

Phosphorous acid

None

47. When SO₂ is passed through acidified K₂Cr₂O₇ solution?

The solution is decolourised

Green Cr₂(SO₄)₃ is formed

The solution turns blue

SO₂ is reduced

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

HNO₂

H₂SO₄

HCl

HNO₃

49. Sulphur trioxide is an anhydride of

Sulphurous acid

Sulphuric acid

Hydro sulphuric

None of these

50. Which catalyst is used in contact process?

Ag₂O

SO₃

Fe₂O₃

V₂O₅

Page 3 of 3

51. All elements of VI A group are

Non-metals

Metalloids

None

Metals

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

NO₂

N₂

NH₃

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

54. Which one is colored among the following?

SO₂

N₂O

None of these

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

Bismuth

Arsenic

Antimony

Nitron

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Maan AliLast Updated: April 19, 2025

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ECAT Chemistry Group VA and VIA Elements Test Online

Chemistry Group VA and VIA Elements MCQS Online Test

ECAT Chemistry Group VA and VIA Elements Chapter Online Test

ECAT Chemistry Group VA and VIA Elements Test

Chemistry

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