MCQ
Di-imide $(N_2H_4)$ is used to reduce doubble bond of
  • A
    $ - \mathop C\limits_|  = O$
  • B
    $-C \equiv N$
  • C
    $-NO_2$
  • $-CH =CH-$

Answer

Correct option: D.
$-CH =CH-$
d
$(d)$ Di-imide is used to reduce pi-bond formed between like atom. 

For example  $\to -CH = CH-, - N = N -$

It can not be reduced following gps.

$\begin{array}{*{20}{c}}
  {O\,\,\,\,\,\,\,\,N\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,} \\ 
  {||\,\,\,\,\,\,\,\,\,\,\,||\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,} \\ 
  { \to  - C - , - C - , - N = O, - C \equiv N - NC,} 
\end{array}$

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