Identify gas A in the following experiment

Identify gas A in the following experiment

(a) Nitrogen
(b) Hydrogen
(c) Oxygen
(d) Carbon dioxide

Ans. (b) Hydrogen

Explanation: Hydrogen gas is evolved when dilute sulphuric acid is added to zinc granules. The type of reaction taking place is single displacement reaction. Zn(s) + H2SO4(aq) → ZnSO4(aq)+ H2(g)

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