Q49 / 180 · AIIMS 2018 (27 May) · Chemistry

Assertion : Electrolysis of $\mathrm{NaCl}_{(a q)}$ produces $\mathrm{Na}$ metal. Reason : $\mathrm{Na}^{+}$is obtained at cathode.

  • A
    If both assertion and reason are true and reason is the correct explanation of assertion.
  • B
    If both assertion and reason are true but reason is not the correct explanation of assertion.
  • C
    If assertion is true but reason is false.
  • Correct answer
    D
    If both assertion and reason are false.

Solution

Electrolysis of brine solution $\left(\mathrm{NaCl}_{(a q)}\right)$ produces $\mathrm{NaOH}, \mathrm{H}_2$ and $\mathrm{Cl}_2$. Hydrogen gas is obtained at cathode.

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

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