MCQ
$\begin{matrix}
Ph-C{{H}_{2}}-CH-C{{H}_{3}}\xrightarrow{K}\xrightarrow{{{C}_{2}}{{H}_{5}}Br}(A) \\
|\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,\, \\
OH\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,\, \\
\end{matrix}$
Ph-C{{H}_{2}}-CH-C{{H}_{3}}\xrightarrow{K}\xrightarrow{{{C}_{2}}{{H}_{5}}Br}(A) \\
|\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,\, \\
OH\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,\, \\
\end{matrix}$
Product $(A)$ in above reaction is
- A$\begin{matrix}
Ph-C{{H}_{2}}-CH-C{{H}_{3}}, \\
\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,|\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,\, \\
\,\,\,\,\,\,\,\,\,\,\,\,\,\,OEt \\
\end{matrix}$ (inversion) - ✓$\begin{matrix}
Ph-C{{H}_{2}}-CH-C{{H}_{3}}, \\
\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,|\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,\, \\
\,\,\,\,\,\,\,\,\,\,\,\,\,\,OEt \\
\end{matrix}$ (retention) - C$\begin{matrix}
Ph-C{{H}_{2}}-CH-C{{H}_{3}}, \\
\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,|\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,\, \\
\,\,\,\,\,\,\,\,\,\,\,\,\,\,OEt \\
\end{matrix}$ (racemic) - D$Ph - CH = CH - CH_3$
