Explain the method of preparation of aldehydes and ketones from acyl chloride (acid chloride) compounds with suitable examples.

(N/A) Aldehyde from acyl chloride: Acyl chloride is hydrogenated over a catalyst,palladium on barium sulphate $(Pd/BaSO_4)$. This reaction is known as the Rosenmund reduction.
$(i)$ Preparation of ethanal (acetaldehyde) from ethanoyl chloride (acetyl chloride):
$CH_3COCl + H_2 \xrightarrow{Pd/BaSO_4} CH_3CHO + HCl$
$(ii)$ Preparation of benzaldehyde from benzoyl chloride:
$C_6H_5COCl + H_2 \xrightarrow{Pd/BaSO_4} C_6H_5CHO + HCl$
$(b)$ Ketone from acyl chloride: Ketones can be prepared by the reaction of acyl chlorides with dialkylcadmium $(R_2Cd)$,which is prepared by the reaction of Grignard reagent with cadmium chloride $(CdCl_2)$.
$2RMgX + CdCl_2 \rightarrow R_2Cd + 2Mg(X)Cl$
$2R'COCl + R_2Cd \rightarrow 2R'COR + CdCl_2$