Q30 / 150 · MHT CET 2023 (09 May Shift 1) · Chemistry

Identify the gas produced due to reduction of $\mathrm{NH}_4^{+}$ions at cathode during working of dry cell.

  • A
    Ammonia
  • Correct answer
    B
    Hydrogen
  • C
    Hydrogen chloride
  • D
    Chlorine

Solution

In a dry cell, at cathode, $\mathrm{NH}_4^{+}$ions are reduced and hydrogen gas is produced. $2 \mathrm{NH}_{4(\mathrm{aq})}^{+}+2 \mathrm{e}^{-} \longrightarrow 2 \mathrm{NH}_{3(\mathrm{aq})}+\mathrm{H}_{2(\mathrm{~g})}$

Hence, the correct answer is option: 'B'.

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