MCQ
Normal butane convert into isobutane by
- A$LiAl{H_4}$
- ✓$AlC{l_3}$
- C$NaB{H_4}$
- D$Zn / HCl$
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$I.$ $ICI_2^+$ $II.$ $NH_2^-$
$III.$ $CS_2$ $IV.$ $H_2Se$

What is the $A$ product
$\mathop {\begin{array}{*{20}{c}}
O \\
{||} \\
{Ph - C - Ph}
\end{array}}\limits_{(I)} $ $\mathop {\begin{array}{*{20}{c}}
{\,\,\,\,\,\,O} \\
{\,\,\,\,\,||} \\
{C{H_3} - C - H}
\end{array}}\limits_{(II)} $ $\mathop {\begin{array}{*{20}{c}}
{\,O} \\
{||} \\
{C{H_3} - C - C{H_3}}
\end{array}}\limits_{(III)} $
$RCHO + NH_2NH_2 \rightarrow RCHN = NH_2$
What sort of reaction is it ?