$\mathrm{C}_3 \mathrm{H}_4+\mathrm{H}_2 \mathrm{O} \underset{\mathrm{Hg}^{2+} / H^*}{333 \mathrm{~K}}[\mathrm{X}] \stackrel{\text { Tautomerisation }}{\rightleftharpoons} Y$ $\mathrm{X}$ and $\mathrm{Y}$ are respectively

• A

  unsaturated alcohol, aldehyde
• B

  saturated alcohol, ketone
• Correct answer
  C

  unsaturated alcohol, ketone
• D

  saturated alcohol, aldehyde

Solution

Here, $\mathrm{X}$ is unsaturated alcohol and $\mathrm{Y}$ is ketone.

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