Name the gas evolved when zinc granules are treated/heated with:

(a) hydrochloric acid solution


(b) sodiumhydroxide solution

(a) 2HCl + Zn ZnCl2 + H2

Hydrogen gas is formed.


(b) 2NaOH + Zn Na2ZnO2 + H2


Hydrogen gas is formed in the reaction.


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