MCQ
Fastest rate of reaction will be when $R$ is
- ✓$CH_3 -$
- B$CH_3 - CH_2$
- C$\begin{matrix}
C{{H}_{3}}-CH- \\
\,\,\,\,\,\,\,\,\,| \\
\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,C{{H}_{3}} \\
\end{matrix}$ - D$\begin{matrix}
\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,C{{H}_{3}} \\
\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,| \\
C{{H}_{3}}-C- \\
\,\,\,\,\,\,\,\,\,\,\,\,\,\,| \\
\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,C{{H}_{3}} \\
\end{matrix}$
