Question
Identify $$(Z)$$ in the following reaction series,
Identify $$(Z)$$ in the following reaction series,
\[{{C}_{2}}{{H}_{5}}I\xrightarrow[KOH]{\text{Alcoholic}}\left( X \right)\xrightarrow{B{{r}_{2}}}\] \[\left( Y \right)\xrightarrow{KCN}\left( Z \right)\]
A.
\[C{{H}_{3}}-C{{H}_{2}}-CN\]
B.
\[\underset{\begin{smallmatrix}
|\,\,\,\,\,\,\,\,\,\,\,\,\,\, \\
CN\,\,\,\,\,\,\,\,\,\,\,
\end{smallmatrix}}{\mathop{C{{H}_{2}}\,\,-}}\,\underset{\begin{smallmatrix}
|\,\,\,\,\,\,\,\, \\
CN\,\,\,\,\,\,
\end{smallmatrix}}{\mathop{C{{H}_{2}}}}\,\]
C.
\[\underset{\begin{smallmatrix}
|\,\,\,\,\,\,\,\,\,\,\,\,\,\, \\
Br\,\,\,\,\,\,\,\,\,\,\,\,\,
\end{smallmatrix}}{\mathop{C{{H}_{2}}\,\,-}}\,\underset{\begin{smallmatrix}
|\,\,\,\,\,\,\,\, \\
CN\,\,\,\,\,\,
\end{smallmatrix}}{\mathop{C{{H}_{2}}}}\,\]
D.
\[\underset{\begin{smallmatrix}
|\,\,\,\,\,\,\,\,\,\,\,\,\,\, \\
Br\,\,\,\,\,\,\,\,\,\,\,\,\,
\end{smallmatrix}}{\mathop{CH\,\,=}}\,\underset{\begin{smallmatrix}
|\,\,\,\,\,\,\,\, \\
CN\,\,\,\,\,\,
\end{smallmatrix}}{\mathop{CH}}\,\]
Answer :
\[\underset{\begin{smallmatrix}
|\,\,\,\,\,\,\,\,\,\,\,\,\,\, \\
CN\,\,\,\,\,\,\,\,\,\,\,
\end{smallmatrix}}{\mathop{C{{H}_{2}}\,\,-}}\,\underset{\begin{smallmatrix}
|\,\,\,\,\,\,\,\, \\
CN\,\,\,\,\,\,
\end{smallmatrix}}{\mathop{C{{H}_{2}}}}\,\]
Solution :
