MCQ
Among the following compounds, which will give maximum enol content in solution
  • A
    $\begin{array}{*{20}{c}}
    {\,O\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,O}\\
    {\,||\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,||}\\
    {{C_6}{H_5} - C - C{H_2} - C - {C_6}{H_5}}
    \end{array}$
  • B
    $\begin{array}{*{20}{c}}
    {\,O\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,O}\\
    {\,||\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,||}\\
    {C{H_3} - C - C{H_2} - C - C{H_3}}
    \end{array}$
  • C
    $\begin{array}{*{20}{c}}
    {\,O\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,}\\
    {\,||\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,}\\
    {C{H_3} - C - C{H_2} - C{H_2} - C{H_3}}
    \end{array}$
  • D
    $\begin{array}{*{20}{c}}
    {\,O\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,}\\
    {\,||\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,}\\
    {C{H_3} - C - C{H_2} - COO{C_2}{H_5}}
    \end{array}$

Answer

$(a)$ More the acidic $H$, more will be the enol contant.

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