$\mathop {\begin{array}{*{20}{c}}
{OH\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,O} \\
{|\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,||} \\
{C{H_2} = C - C{H_2} - C - C{H_3}}
\end{array}}\limits_{(I)} \rightleftharpoons $
$\mathop {\begin{array}{*{20}{c}}
{OH\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,O} \\
{|\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,||} \\
{C{H_3} - C - C{H_2} - C - C{H_3}}
\end{array}}\limits_{(II)} \rightleftharpoons $
$\mathop {\begin{array}{*{20}{c}}
{OH\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,O} \\
{|\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,||} \\
{C{H_3} - C = CH - C - C{H_3}}
\end{array}}\limits_{(III)} $

$(A)\,\, HCHO$ $(B) \,\,CH_3COCH_3$
$(C)\,\,PhCOCH_3$ $(D)\,\ PhCOPh$
$A$. ફોર્મિક એસિડ
$B$. ફોર્માલ્ડીહાઇડ
$C$. બેન્ઝાલ્ડીહાઇડ
$D$. એસીટોન
નીચે આપેલા વિકલ્પોમાંથી સાયો જવાબ પસંદ કરો .


$[A]\,\,\begin{array}{*{20}{c}} {C{H_3} - C - {O^ - }} \\ {\,\,||} \\ {\,\,O} \end{array}$
$[B]\,\,CH_3O^-$
$[C]\,\,CN^-$
$[D]\,\,$ 