MCQ
Which of the following has maximum reactivity towards nucleophilic attack
- ✓$\begin{array}{*{20}{c}}
O \\
{||} \\
{R - C - Cl}
\end{array}$ - B$\begin{array}{*{20}{c}}
O \\
{||} \\
{R - C - R}
\end{array}$ - C$\begin{array}{*{20}{c}}
{O\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,} \\
{||\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,} \\
{R - C - O - {C_2}{H_5}}
\end{array}$ - D$\begin{array}{*{20}{c}}
{O\,\,\,\,\,\,} \\
{||\,\,\,\,\,\,} \\
{R - C - N{H_2}}
\end{array}$
