Question

Which colourless gas evolves when $ NH_4Cl $ reacts with zinc in a dry cell battery ?

• A. $ NH_3 $
• B. $ N_2 $
• C. $ H_2 $
• D. $ Cl_2 $

Answer 1

Answer: (C)

$H_{2}$ gas is evolved, when $Zn$ reacts with
$NH_{4}Cl$ in dry cell battery
$Zn+2NH_{4}Cl \to Zn(NH_{3})_{2}Cl_{2}+\underset{\text{colourless gas}}{{H_{2}}}↑$