Consider the following reactions:C_2H_2 + H_2 | vedclass

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(D) The reaction sequence is:$HC \equiv CH + H_2O \xrightarrow{Hg^{2+}/H^+, 333 \ K} [CH_2=CH-OH] \rightleftharpoons CH_3CHO$Here,$Y$ is $CH_3CHO$ (Et

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$CH_3COOH \xrightarrow[	ext{(ii) } H_2O]{	ext{(i) } LiAlH_4 / 	ext{ether}}$

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(D) The reaction sequence is:$HC \equiv CH + H_2O \xrightarrow{Hg^{2+}/H^+, 333 \ K} [CH_2=CH-OH] \rightleftharpoons CH_3CHO$Here,$Y$ is $CH_3CHO$ (Ethanal).$A$: Rosenmund reduction of acetyl chloride gives ethanal $(CH_3COCl + H_2 \xrightarrow{Pd/BaSO_4} CH_3CHO + HCl)$.$B$: Dehydrogenation of ethanol gives ethanal $(CH_3CH_2OH \xrightarrow{Cu, 573 \ K} CH_3CHO + H_2)$.$C$: Stephen reduction of acetonitrile gives ethanal $(CH_3CN + SnCl_2 + HCl$ $\rightarrow CH_3CH=NH$ $\xrightarrow{H_3O^+} CH_3CHO)$.$D$: Reduction of acetic acid with $LiAlH_4$ gives ethanol $(CH_3CH_2OH)$,not ethanal $(CH_3CHO)$.Therefore,$Y$ cannot be obtained from reaction $D$.

Consider the following reactions:
$C_2H_2 + H_2O \xrightarrow[333 \ K]{Hg^{2+} / H^{+}} [X] \stackrel{\text{Isomerisation}}{\rightleftharpoons} Y$
$Y$ cannot be obtained from which of the following reactions?

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Consider the following reactions:$C_2H_2 + H_2O \xrightarrow[333 \ K]{Hg^{2+} / H^{+}} [X] \stackrel{\text{Isomerisation}}{\rightleftharpoons} Y$$Y$ cannot be obtained from which of the following reactions?