• # question_answer $S{{N}^{1}}$ reaction is faster in [Orissa JEE 2004] A) $C{{H}_{3}}C{{H}_{2}}Cl$ B) $\begin{matrix} C{{H}_{3}} \\ C{{H}_{3}} \\ \end{matrix}>CH-Cl$ C) $C{{H}_{3}}-\underset{C{{H}_{3}}\ }{\overset{C{{H}_{3}}\ }{\mathop{\underset{|}{\overset{|}{\mathop{C}}}\,-Cl}}}\,$ D) $C{{H}_{3}}-\underset{C{{H}_{3}}}{\mathop{\underset{\underset{|}{\mathop{C}}\,{{H}_{2}}}{\mathop{\underset{|}{\mathop{C}}\,H\ }}\,}}\,-Cl$

$S{{N}^{1}}$ mechanism proceeds through carbocation intermediate. $C{{H}_{3}}-\underset{C{{H}_{3}}\ \,}{\overset{C{{H}_{3}}\ \ }{\mathop{\underset{|}{\overset{|}{\mathop{C}}}\,-Cl}}}\,$