$\begin{array}{*{20}{c}}
{C{H_3} - C - H} \\
{\,\,\,\,\,\,\,\,\,||\,\,\,\,\,} \\
{\,\,\,\,\,\,\,\,O\,\,\,\,}
\end{array}$ $\xrightarrow{{NaOH + C{l_2}}}A + HCOONa$ Product $A$ is can be used as
→$\begin{matrix}
C{{H}_{3}}\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,\, \\
|\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,\, \\
Cl-C{{H}_{2}}-C-C{{H}_{2}}-C{{H}_{2}}-Cl+{{I}^{-}} \\
|\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,\, \\
\,C{{H}_{3}}\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,\, \\
\end{matrix}\xrightarrow[DMF]{}$ product; Major product of this reaction is
→
