


$\begin{array}{*{20}{c}}
O\\
{||}\\
{C{H_3} - C - C{H_3}}
\end{array}$ $ + \begin{array}{*{20}{c}}
{C{H_2}OH}\\
{\,\,\,\,|\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,}\\
{C{H_2}OH}
\end{array}$ $\overset{HCl}{\longleftrightarrow}$ ?


$(i)$ $CH_3CH_2COCH_2Cl$ $(ii)$ $C_6H_5COCH_3$
$(iii)$ $C_6H_5COCHCl_2$ $(iv)$ $CH_3CH_2COCCl_3$
