MCQ
Arrange in their increasing order of equilibrium constants for hydration ?

$\underset{(A)}{\mathop{\begin{matrix}
   O  \\
   ||  \\
   C{{H}_{3}}-C-C{{H}_{3}},  \\
\end{matrix}}}\,\,\,\,\,\underset{(B)}{\mathop{\begin{matrix}
   \,\,\,\,\,\,O  \\
   \,\,\,\,\,\,||  \\
   C{{H}_{3}}-C-H,  \\
\end{matrix}}}\,\,\,\,\,\underset{(C)}{\mathop{\begin{matrix}
   O\,\,\,\,\,\,\,\,\,\,\,\,\,\,  \\
   ||\,\,\,\,\,\,\,\,\,\,\, \,\, \\
   C{{H}_{3}}-C-C{{H}_{2}}-Cl,  \\
\end{matrix}}}\,$ $\,\,\underset{(D)}{\mathop{\begin{matrix}
   O  \\
   ||  \\
   H-C-H,  \\
\end{matrix}}}\,\,\,\,\underset{(E)}{\mathop{\begin{matrix}
   \,\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,O  \\
   \,\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,||  \\
   Cl-C{{H}_{2}}-C-H  \\
\end{matrix}}}\,$

  • A
    $A < B < C < D < E$
  • $A < C < B < E < D$
  • C
    $A < C < E < B < D$
  • D
    $C < A < B < E < D$

Answer

Correct option: B.
$A < C < B < E < D$
b
$(b)$ Aldehyde is more reactive than ketone, $-I$ effect increases reactivity  toward nucleophilic attack.

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