MCQ
$\begin{array}{*{20}{c}}
{\,C{H_3}\,\,\,\,\,\,\,\,\,\,\,\,\,} \\
{|\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,} \\
{C{H_3} - C - C{H_2} - \mathop C\limits^ \oplus {H_2}} \\
{|\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,} \\
{C{H_3}\,\,\,\,\,\,\,\,\,\,\,\,\,\,}
\end{array} \to \begin{array}{*{20}{c}}
{\,\,\,\,\,\,\,\,\,\,\,C{H_3}} \\
{\,\,\,\,\,\,|} \\
{C{H_3} - \mathop C\limits^ \oplus - CH - C{H_3}} \\
{\,\,\,\,\,\,|} \\
{\,\,\,\,\,\,\,\,\,\,\,\,\,C{H_3}}
\end{array}$
{\,C{H_3}\,\,\,\,\,\,\,\,\,\,\,\,\,} \\
{|\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,} \\
{C{H_3} - C - C{H_2} - \mathop C\limits^ \oplus {H_2}} \\
{|\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,} \\
{C{H_3}\,\,\,\,\,\,\,\,\,\,\,\,\,\,}
\end{array} \to \begin{array}{*{20}{c}}
{\,\,\,\,\,\,\,\,\,\,\,C{H_3}} \\
{\,\,\,\,\,\,|} \\
{C{H_3} - \mathop C\limits^ \oplus - CH - C{H_3}} \\
{\,\,\,\,\,\,|} \\
{\,\,\,\,\,\,\,\,\,\,\,\,\,C{H_3}}
\end{array}$
How many ${H^ \ominus }$ shifts are involved in above rearrangement :
- A$4$
- B$3$
- C$2$
- ✓$1$
