Chemistry Class-11: Chapter –9. Hydrogen Part – 2

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Question: 9

Which of the following equation depicts reducing nature of ?

(i)

(ii)

(iii)

(iv)

Answer: (ii)

Question: 10

Hydrogen peroxide is _________.

(i) An oxidising agent

(ii) A reducing agent

(iii) Both an oxidising and a reducing agent

(iv) Neither oxidising nor reducing agent

Answer: (iii)

Question: 11

Which of the following reactions increases production of dihydrogen from synthesis gas?

(i)

(ii)

(iii)

(iv)

Answer: (iii)

Question: 12

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

(i) sodium sulphate and water

(ii) sodium sulphate and oxygen

(iii) sodium sulphate, hydrogen and oxygen

(iv) sodium sulphate and hydrogen peroxide

Answer: (iv)

Question: 13

Hydrogen peroxide is obtained by the electrolysis of ______.

(i) Water

(ii) Sulphuric acid

(iii) Hydrochloric acid

(iv) Fused sodium peroxide

Answer: (ii)

Question: 14

Which of the following reactions is an example of use of water gas in the synthesis of other compounds?

(i)

(ii)

(iii)

(iv)

Answer: (iv)

Question: 15

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

(i)

(ii)

(iii)

(iv)

Answer: (i)

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