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STD 12 - 6. Haloalkanes and Haloarenes — NEET STD 11 Science — Question

Gujarat BoardEnglish MediumSTD 11 ScienceNEETSTD 12 - 6. Haloalkanes and Haloarenes4 Marks
MCQ
Product $(P)$ is
  • A
    $\begin{array}{*{20}{c}}
      {\,\,\,\,\,\,OH} \\ 
      {\,|} \\ 
      {Ph - {\text{  }}C - {\text{ }}Ph} \\ 
      {\,|} \\ 
      {\,\,\,Ph} 
    \end{array}$
  • ✓
    $\begin{array}{*{20}{c}}
      {\,\,\,\,\,\,OH}\,\,\,\,\, \\ 
      {\,|} \,\,\,\,\\ 
      {Ph - {\text{  }}C - {\text{ }}C{H_3}} \\ 
      {\,|}\,\,\,\,\, \\ 
      {\,\,\,\,\,\,\,C{H_3}}\,\,\,
    \end{array}$
  • C
    $\begin{array}{*{20}{c}}
      O \\ 
      {||\,} \\ 
      {Ph - {\text{  }}C - {\text{ }}C{H_3}} 
    \end{array}$
  • D
    $\begin{array}{*{20}{c}}
      {\,\,\,O} \\ 
      {\,\,\,\,||\,} \\ 
      {Ph - {\text{  }}C - {\text{ }}Ph} 
    \end{array}$
✓

Answer

Correct option: B.
$\begin{array}{*{20}{c}}
  {\,\,\,\,\,\,OH}\,\,\,\,\, \\ 
  {\,|} \,\,\,\,\\ 
  {Ph - {\text{  }}C - {\text{ }}C{H_3}} \\ 
  {\,|}\,\,\,\,\, \\ 
  {\,\,\,\,\,\,\,C{H_3}}\,\,\,
\end{array}$
b
excess of $CH_3MgBr$ is used to maximise the yield.

$\begin{matrix}
   \begin{matrix}
   O\,\,\, \,\,\, \\
   ||\,\,\,\,\,\,  \\
\end{matrix}\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,  \\
   Ph-C-N-O-C{{H}_{3}}  \\
   |\,\,\,\,\,  \\
   \,C{{H}_{3}}  \\
\end{matrix}$ $\xrightarrow{C{{H}_{3}}MgBr}$  $\begin{matrix}
   O\,\,\,  \\
   ||\,\,\,  \\
   Ph-C-C{{H}_{3}}  \\
\end{matrix}$ $\xrightarrow{C{{H}_{3}}MgBr}$  $\begin{matrix}
   \begin{matrix}
   \overset{\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,\Theta }{\mathop{\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,O}}\,\overset{\oplus }{\mathop{Mg}}\,Br  \\
   |\,\,\,\,  \\
\end{matrix}  \\
   Ph-C-C{{H}_{3}}  \\
   |\,\,\,\,\,  \\
   C{{H}_{3}}  \\ 
\end{matrix}$ $\xrightarrow{{{H}^{\oplus }}}$  $\begin{matrix}
   \begin{matrix}
   \,\,\,OH  \\
   |  \\
\end{matrix}\,\,  \\
   Ph-C-C{{H}_{3}}  \\
   |\,\,\,\,  \\
   \,C{{H}_{3}}  \\
\end{matrix}$

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