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In which of the following reaction cyanide will be obtained as a major product ?
  • A$\begin{array}{*{20}{c}}
      {O\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,} \\ 
      {||\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,} \\ 
      {Ph - C - C{H_3}\xrightarrow[{(ii)\,{H_3}{O^ + }}]{{(i)\,LiAl{H_4}}}} 
    \end{array}$
  • B$\begin{array}{*{20}{c}}
      {\,O\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,} \\ 
      {\,\,||\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,} \\ 
      {Ph - C - N{H_2}\xrightarrow[{B{r_2}}]{{NaOH}}} 
    \end{array}$
  • C$\begin{array}{*{20}{c}}
      {\,\,O\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,} \\ 
      {\,\,\,\,||\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,} \\ 
      {Ph - C - N{H_2}\xrightarrow{{{P_4}{O_{10}}}}} 
    \end{array}$
  • D$\begin{array}{*{20}{c}}
      {O\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,} \\ 
      {||\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,} \\ 
      {Ph - C - O - H\xrightarrow{{SOC{l_2}}}\,\xrightarrow{{N{H_3}}}} 
    \end{array}$
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