Q1 of 270 Page 79

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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