Which colourless gas evolves, when \( \mathrm{NH}_{4} \mathrm{Cl} \...
Which colourless gas evolves, when \( \mathrm{NH}_{4} \mathrm{Cl} \) reacts with zinc in a dry cell battery
(a) \( \mathrm{NH}_{4} \)
(b) \( \mathrm{N}_{2} \)
(c) \( \mathrm{H}_{2} \)
(d) \( \mathrm{Cl}_{2} \)
\( \mathrm{P} \)
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