Q. Which colourless gas evolves when ${NH}_{4}Cl$ reacts with zinc in Adry cell battery?
A) ${NH}_{3}$
B) $N_{2}$
C) $H_{2}$
D) ${Cl}_{2}$
Explanation
(c)
$H_{2}$ gas is evolved, when Zn reacts with ${NH}_{4}Cl$ in dry cell battery.
Zn + 2N$H_{4}Cl$ → Zn $({NH}_{3})_{2}{Cl}_{2} + \ H_{2}\ \uparrow$
Colourless
gas
Reviewed by Dr. Abubacker
Physics Educator & NEET/JEE Specialist
Ph.D. in Physics with 19+ years of teaching experience.