MCQ
The rate at which a substance reacts depends on its
  • A
    Atomic weight
  • B
    Equivalent weight
  • C
    Molecular weight
  • Active mass

Answer

Correct option: D.
Active mass
d
(d)According to law of mass action.

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$(I)$ $\begin{array}{*{20}{c}}
  {{C_6}{H_5} - CH - Cl} \\ 
  {\,\,|} \\ 
  {\,\,\,\,\,\,\,\,\,C{H_3}} 
\end{array}\xrightarrow[{5\% \,\,water}]{{95\% \,\,\,acetone}}\begin{array}{*{20}{c}}
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  | \\ 
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$(II)$ $\begin{array}{*{20}{c}}
  {{C_6}{H_5} - CH - Cl} \\ 
  {\,\,|} \\ 
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  {{C_6}{H_5} - CH - OH} \\ 
  | \\ 
  {\,\,\,\,\,\,C{H_3}} 
\end{array}$

$(III)$ $\begin{array}{*{20}{c}}
  {{C_6}{H_5} - CH - Cl} \\ 
  {\,\,|} \\ 
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  {{C_6}{H_5} - CH - OH} \\ 
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  {\,\,\,\,\,\,C{H_3}} 
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$(IV)$ $\begin{array}{*{20}{c}}
  {{C_6}{H_5} - CH - Cl} \\ 
  {\,\,|} \\ 
  {\,\,\,\,\,\,C{H_3}} 
\end{array}\xrightarrow{{100\% \,water}}\begin{array}{*{20}{c}}
  {{C_6}{H_5} - CH - OH} \\ 
  | \\ 
  {\,\,\,\,\,\,C{H_3}} 
\end{array}$

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