The product of reduction of benzaldehyde is

In the reaction $CH_3CH_2OH \xrightarrow{OH^-} CH_3CHO$,which carbon atom undergoes oxidation?

Carbonyl compounds can generally be converted to hydrocarbons by

Compound $(C)$ is

$A$ primary alcohol was reacted with pyridinium chlorochromate $(PCC)$,which resulted in a product $P$. The product $P$ on treatment with ammoniacal silver nitrate solution produces:

The major products formed in the following reaction sequence $A$ and $B$ are :