MCQ
In the reaction, product $P$ is
  • A


  • C

  • D
    ${C_6}{H_5} - \mathop {\mathop C\limits^{||} }\limits^O - {C_6}{H_5}$

Answer

Correct option: B.

b
(b) ${C_6}{H_5}MgBr\mathop {\xrightarrow{{(i)\,C{O_2}}}}\limits_{(ii)\,H_3^ + O} \mathop {{C_6}{H_5}COOH}\limits_{({\text{P}})} $

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For each of the following pairs of $E_2$ reaction, select the one that occurs with  the greater rate constant.

$(1)$ $C{H_3}C{H_2}C{H_2}Cl + $ $\begin{array}{*{20}{c}}
  {\,\begin{array}{*{20}{c}}
  {\,\,\,\,\,\,\,\,\,\,C{H_3}} \\ 
  {\,\,\,|} 
\end{array}} \\ 
  {C{H_3} - C - {O^ - }} \\ 
  {\,\,\,|} \\ 
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\end{array}$                      $(2)$  $C{H_3}C{H_2}C{H_2}I + $$\begin{array}{*{20}{c}}
  {\,\begin{array}{*{20}{c}}
  {\,\,\,\,\,\,\,\,\,\,C{H_3}} \\ 
  {\,\,\,|} 
\end{array}} \\ 
  {C{H_3} - C - {O^ - }} \\ 
  {\,\,\,|} \\ 
  {\,\,\,\,\,\,\,\,\,\,C{H_3}} 
\end{array}$

$(3)$  $\begin{array}{*{20}{c}}
  {{H_3}C - CH - C{H_3}} \\ 
  {|\,\,\,\,} \\ 
  {Br\,\,\,} 
\end{array}$  $+CH_3O^-$                      $(4)$  $\begin{array}{*{20}{c}}
  {{H_3}C - CH - C{H_3}} \\ 
  {|\,\,\,\,} \\ 
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\end{array}$ $+CH_3S^-$

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