MCQ
Pure  $N_2$  is not produced when
  • Red hot  $CuO + NH_3\,\,\xrightarrow{\Delta }\,\,$
  • B
    $Ba(N_3)_2\,\,\xrightarrow{\Delta }\,\,$
  • C
    $NaN_3\,\,\xrightarrow{\Delta }\,\,$
  • D
    None of these

Answer

Correct option: A.
Red hot  $CuO + NH_3\,\,\xrightarrow{\Delta }\,\,$
a

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$\,\begin{array}{*{20}{c}}
{\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,COOH}\\
{\,\,\,\,\,\,\,\,\,|}\\
{\mathop {N{H_3}}\limits^{\,\, \oplus }  - C - H}\\
{\,\,\,\,\,\,\,\,\,\,|}\\
{\,\,\,\,\,\,\,\,\,\,R}
\end{array}\,\,\,$

Stability order of following carbocation's

$(i)\,\begin{array}{*{20}{c}}
  {C{H_3} - \mathop C\limits^ \oplus   - C{H_3}} \\ 
  | \\ 
  {\,\,\,\,\,\,OC{H_3}} 
\end{array}$

$(ii)\,\begin{array}{*{20}{c}}
  {C{H_3} - \mathop C\limits^ \oplus   - C{H_3}} \\ 
  | \\ 
  {\,\,\,\,\,\,C{H_3}} 
\end{array}$

$(iii)\begin{array}{*{20}{c}}
  {C{H_3} - \mathop C\limits^ \oplus  {H_2} - NH} \\ 
  {\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,|} \\ 
  {\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,C{H_3}} 
\end{array}$

$(iv)\,C{H_3} - \mathop C\limits^ \oplus  {H_2}$