\(\begin{matrix}
O \\
|| \\
R-C-Cl \\
\end{matrix}\) \(+\,{{R}_{1}}MgBr\,\xrightarrow[(2){{H}^{\oplus }}]{}\) \(\begin{matrix}
\begin{matrix}
\,\,\,OH \\
|\,\, \\
\end{matrix} \\
R-C-{{R}_{1}} \\
|\,\, \\
{{R}_{1}} \\
\end{matrix}\)
\((d)\) has three unlike group : it cannot be prepared.
$R-Cl\xrightarrow{(i)\,\,KCN,(ii)\,LiAl{{H}_{4}}} $ નીપજ $A$
$R-Cl\xrightarrow{(i)\,\,AgCN,(ii)\,LiAl{{H}_{4}}} $ નીપજ $B $
નિપજો $A$ અને $B$ શું હશે ?