The catalyst required for the reaction

$HC \equiv CH + dil {. H}_{2} {SO}_{4} \overset{Catalyst}{\to} {CH}_{3} CHO$

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${HgSO}_{4}$

${AlCl}_{3}$

answer is A.

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Detailed Solution

$\begin{array}{l} HC \equiv CH + dil {. H}_{2} {SO}_{4} \overset{{HgSO}_{4}}{\to} \\ {CH}_{2} =CH-OH ⇌_{Isomerism}^{Keto - Enol} {CH}_{3} CHO \end{array}$

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