$\begin{array}{*{20}{c}}
{\,\,\,C{H_2}OH} \\
{|\,\,\,\,\,\,\,\,\,\,\,\,\,} \\
{CHOH} \\
{|\,\,\,\,\,\,\,\,\,\,\,\,\,} \\
{\,\,C{H_2}OH}
\end{array}\,\xrightarrow[{}]{{{H_2}{O_2}/FeS{O_4}}}\begin{array}{*{20}{c}}
{\,\,\,\,C{H_2}OH\,\,\,} \\
{|\,\,\,\,\,\,\,\,\,\,\,\,\,\,} \\
{C\,\,\,\,\,\,\,\,\,\,\,\,\,} \\
{|\,\,\,\,\,\,\,\,\,\,\,\,\,\,} \\
{\,\,\,CHO\,\,\,\,\,\,\,\,}
\end{array}\,\, \to \,\begin{array}{*{20}{c}}
{\,\,C{H_2}OH\,\,\,} \\
{|\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,} \\
{C = O\,\,\,\,\,} \\
{|\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,} \\
{\,C{H_2}OH\,\,}
\end{array}$
ગ્લીસરાલ્ડીહાઇડ ડાયહાઇડ્રોક્સી એસિટોન
ગ્લીસરોઝ
નીપન $A$ અને નીપન $B$ માં ઓક્સિજન પરમાણુઓ કુલ સંખ્યા ........... છે. 
$[Figure]$ $\xrightarrow[{2.\,C{H_3}I\,(l.\,eq.)}]{{1.\,{K_2}C{O_3}}}$

$C{H_2} = C{H_2}\, \xrightarrow{{HOCl}} \,A\xrightarrow{{_R}}\begin{array}{*{20}{c}}
{C{H_2}OH} \\
{|\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,} \\
{C{H_2}OH}
\end{array}$