Least reactive towards nucleophilic addition is

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MCQ

A
$HCHO$
✓
$\begin{array}{*{20}{c}}
{CC{l_3} - C - H} \\
{\,\,\,\,\,\,||} \\
{\,\,\,\,\,\,O}
\end{array}$
C
$CH_3-CHO$
D
$\begin{array}{*{20}{c}}
{C{H_3} - C - {C_2}{H_5}} \\
{\,\,\,\,\,\,||\,\,\,\,\,\,\,\,} \\
{\,\,\,\,\,\,O\,\,\,\,\,\,\,}
\end{array}$

✓

Answer

Correct option: B.

$\begin{array}{*{20}{c}}
{CC{l_3} - C - H} \\
{\,\,\,\,\,\,||} \\
{\,\,\,\,\,\,O}
\end{array}$

b
More $\overset{EDG}{\rightarrow}$ (electron donating group), more will be reactivity towards $ESR.$

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