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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. At room temperature fluorine is

Greenish yellow gas

Shiny grayish

Red brown liquid

Pale yellow gas

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

3. The structure of white phosphorus is

Square planar

Pyramidal

Tetrahedral

Trigonal planer

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

Phosphorus

Nitrogen

Oxygen

Iodine

5. Which of the following fluorides does not exist?

SbF₅

AsF₅

PF₅

NF₅

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

PF₅

AsF₅

BiF₅

SbF₅

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

N, Si, C, P

C, N, Si, P

P, Si, N, C

Si, P, C, N

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

Semiliquid

Semisolid

Liquids

Solids

9. Ring test is used for confirmation of

None

Phosphates

Arsenates

Nitrates

10. Sodium hexametaphosphate is known as

Nitrolim

Calgon

Permutite

Natalite

11. All elements of VI A group are

Non-metals

None

Metals

Metalloids

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

N₂

H₂

O₂

CO₂

13. BiCl₃ on hydrolysis forms a white precipitate of

Bismuthio acid

Bismuth hydroxide

Bismuth pent chloride

Bismuth oxychloride

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

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

Are both soluble in CS₂

Consist of the same kind of atoms

Can be converted into one another

Can be oxidized by heating in air

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

17. Chlorine is used for

Purification of water

Extraction of gold

All of these

As a bleaching agent

18. When SO₂ is passed through acidified K₂Cr₂O₇ solution?

The solution is decolourised

SO₂ is reduced

The solution turns blue

Green Cr₂(SO₄)₃ is formed

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

As a drying agent

Reducing agent

As acid

Oxidizing agent

20. Relatively pure sulphuric acid is manufactured by

Contact process

Castner’s process

Lead chamber process

Haber’s process

21. Dinitrogen pentaoxide has oxidation no of nitrogen

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

Both combine with metals to form O²¯ and S²¯

Both are usually divalent

Both are paramagnetic

Both exhibit allotropic form

23. Sulphur trioxide is an anhydride of

Sulphurous acid

Hydro sulphuric

None of these

Sulphuric acid

24. Red P can be obtained from white P by

Dissolving it in CS₂ and crystallizing

Heating it with a catalyst in an inert atmosphere

Distilling it in an inert atmosphere

Melting it ad pouring the liquid into water

25. Which catalyst is used in contact process?

Ag₂O

V₂O₅

SO₃

Fe₂O₃

Page 2 of 3

26. Nitrogen is not present in

Fatty acids

Urea

Amino acids

Proteins

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

A halogen

An alkali metal

A noble gas

A transition element

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

N₂

NH₃

NO₂

29. Which one is colored among the following?

N₂O

SO₂

None of these

30. Phosphine is not obtained by the reaction when

Ca₂P₂ reacts with water

PH₄I is boiled with water

White P is heated with NaOH

Red P is heated with NaOH

31. Which of the following elements is most metallic?

32. One of the following is radioactive metal

33. Laughing gas is

N₂O

NO₂

N₂O₃

34. Oleum is

Fuming of H₂SO₄

None of these

Oil of vitriol

Castor oil

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

Antimony

Nitron

Bismuth

Arsenic

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

Arsenic

Phosphorus

Bismuth

Nitrogen

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

250°C

25 °C

0°C

450°C

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

39. Nitrogen and phosphorus forms compounds

Nitrogen forms covalent and phosphorus ionic

Ionic

Covalent as well as ionic frequently

Covalent

40. Phosphorus pentoxide finds use as

A dehydrating agent

An oxidizing agent

A bleaching agent

A reducing agent

41. Relative sulphuric acid is manufactured by

Castoner’s process

Contact process

Haber’s process

Lead chamber process

42. The brown gas formed when metal reduces HNO₃

N₂O₅

N₂O

NO₂

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

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

None

Phosphorous acid

Posh acid

Phosphine

45. Ozone is not

An allotrope

A bent molecule

Paramagnetic

A powerful oxidizing agent

46. Which one has no allotropes?

Arsenic

Antimony

Nitrogen

Phosphorus

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

48. NO₂ o dissolution in water produce

HNO₃

HNO₂ and NO

HNO₂

HNO₃ and HNO₂

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

200 C

300 C

2000 C

3000 C

50. Oxidation of NO in air produces

N₂O₃

N₂O₄

N₂O

Page 3 of 3

51. 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

Stronger reducing agents

More volatile

More ionic

52. Which gas has a pungent smell?

N₂O₃

NO₂

N₂O

53. White phosphorus is

P₄, a tetrahedral solid

P₅, a crown

A linear diatomic molecule

A mono atomic gas

54. Sulphuric acid is anhydride of

Hyposulphuric acid

Hydro Sulphuric acid

Sulphuric acid

Sulphurous acid

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

HNO₃

H₂SO₄

HNO₂

HCl

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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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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

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