Hydrogen MCQs Quiz Multiple Choice Questions & Answers

1. A hydrogen fuel cell is...............times more efficient than an engine

1. 1
2. 3 - 2
3. 8 - 7
4. 10

2. D₂O has higher value of following physical parameters than H₂O, except

1. Molecular Mass
2. Melting Point
3. Density
4. Dielectric Constant

3. Elements of which of the following group(s) of periodic table do not form hydrides.

1. Groups 7, 8, 9
2. Group 13
3. Groups 15, 16, 17
4. Group 14

4. How long does it take to fill your cars hydrogen tank at a fueling station?

1. 3-5 minutes
2. 8 minutes
3. 15 minutes
4. about 60 minutes

5. How many hydrogen fueling stations are operational in the U.S.?

1. 8
2. 100
3. 12
4. 68

6. Hydrogen peroxide is

1. an oxidising agent
2. a reducing agent
3. both an oxidising and a reducing agent
4. neither oxidising nor reducing agent

7. Hydrogen peroxide is obtained by the electrolysis of

1. water
2. sulphuric acid
3. hydrochloric acid
4. fused sodium peroxide

8. Hydrogen resembles halogens in many respects for which several factors are responsible. Of the following factors which one is most important in this respect?

1. Its tendency to lose an electron to form a cation.
2. Its tendency to gain a single electron in its valence shell to attain stable electronic configuration.
3. Its low negative electron gain enthalpy value.
4. Its small size.

9. In what form can you store hydrogen?

1. Gas
2. Liquid
3. Solid
4. All of the above

10. Only one element of..................forms hydride

1. group 6
2. group 7
3. group 8
4. group 9

11. P^{4O10 on hydrolysis produces}

1. H^3PO2
2. H^3PO3
3. H^3PO4
4. PH³

12. Radioactive elements emit alpha, Beta and Gamma rays and are characterised by their halflives. The radioactive isotope of hydrogen is

1. Protium
2. Deuterium
3. Tritium
4. Hydronium

13. Select the incorrect statement for H^{2O2 structure}

1. It is non planar
2. O–O bond length is more in gaseous state than in solid phase
3. Both OH bond are in different plane
4. O–O–H bond angle in gas phase is more than in solid phase

14. Syn-gas is a mixture of

1. CO+N²
2. O³
3. CO + H²
4. CO + H^2CO3

15. The electronic conguration of D (Isotope of Hydrogen)

1. 1s²
2. 1s²2s1¹
3. 1s¹
4. 1s²2s²2p¹

16. The number of H^{2O molecules which are involve in Hydrozen bonding in CuSO4.5H2O molecule itself is}

1. H^3PO2
2. H^3PO3
3. H^3PO4
4. PH³

17. The oxide that gives H₂O₂ on treatment with dilute H₂SO₂ is

1. PbO₂
2. BaO₂ .8H₂O + O₂
3. MnO₂
4. TiO₂

18. True or false: hydrogen is an energy source.

1. True Statement
2. False Statement

19. True/False: hydrogen fuel cell vehicles are electric vehicles

1. False Statement
2. True Statement

20. What can you produce hydrogen from?

1. Water
2. Plants
3. Natural gasl
4. All of the above and more

21. What is the most common element in the world?

1. Hydrogen
2. Oxygen
3. Helium
4. Carbon

22. What is the only by-product of hydrogen fuel-cells?

1. Carbon Dioxide (CO₂, which is a greenhouse gas)
2. Nothing
3. Water vapor
4. Helium

23. What is the strength of 20 volume solution of H^2O2?

1. 5g/L
2. 10g/L
3. 30g/L
4. 60g/L

24. When MnO^{4 reacts with H2O2 in basic medium then following species are involved, except}

1. MnO²
2. O²
3. OH^-
4. Mn²⁺

25. When sodium peroxide is treated with dilute sulphuric acid, we get

1. sodium sulphate and water
2. sodium sulphate and oxygen
3. sodium sulphate, hydrogen and oxygen
4. sodium sulphate and hydrogen peroxide

26. Which group forms hydride?

1. 6
2. 7
3. 8
4. 9

27. Which of the following compounds is used for water softening?

1. Ca₃ (PO₄)₂
2. Na₃PO₄
3. Na₆P₆O₁₈
4. Na₂HPO₄

28. Which of the following hydrides is electron-precise hydride?

1. B₂H₆
2. NH₃
3. H₂O
4. CH₄

29. Which of the following ions will cause hardness in water sample?

1. Ca²⁺
2. Na⁺
3. Cl^-
4. K⁺

30. Which one is ionic hydride in nature?

1. CrH
2. NH³
3. H^2O
4. NaH

31. Why does H⁺ ion always get associated with other atoms or molecules?

1. Ionisation enthalpy of hydrogen resembles that of alkali metals.
2. Its reactivity is similar to halogens.
3. It resembles both alkali metals and halogens.
4. Loss of an electron from hydrogen atom results in a nucleus of very small size as compared to other atoms or ions. Due to smal size it cannot exist free.

32. You can use a hydrogen fuel cell to power

1. Cars/Busses
2. Fork-lifts
3. Cell phones
4. All of the above