Q.
$C_{2}H_{2} \xrightarrow[{Dil. H_{2}SO_{4}}] {{HgSO_{4}}}P \xrightarrow{(o)} $
$Q \xrightarrow[{\text{pyridine}}]{{SOCl_{2}} } R \xrightarrow{ (C_{2}H_{5})_{2}cd }S$
The end product in the above sequence of reactions is
Aldehydes Ketones and Carboxylic Acids
Solution: