$5 \mathrm{~g}$ of zinc is treated separately with an excess of
(a) dilute hydrochloric acid and
(b) aqueous sodium hydroxide.
The ratio of the volumes of $\mathrm{H}_{2}$ evolved in these two reactions is :
$1: 4$
$1: 2$
$2: 1$
$1: 1$
Correct Option: , 4
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