Q. In the reactions, $B\overset{\frac{\ \ \ \ Lindlar\ catalyst}{H_{2}}}{\leftarrow}RC \equiv CR\underset{H_{2}}{\overset{\ \ \ Na/NH_{3}\ \ \ \ }{\rightarrow}}A$ $A$ and $B$ are geometrical isomers. Then,
A) $A$ is $cis$ and $B$ is $trans$
B) $A$ is $trans$ and $B$ is $cis$
C) $A\ and\ B\ are\ cis$
D) $A\ and\ B\ are\ trans$
Explanation
The correct answer is Option B: $A$ is $trans$ and $B$ is $cis$.
A detailed explanation for this question is being prepared.
Reviewed by Dr. Abubacker
Physics Educator & NEET/JEE Specialist
Ph.D. in Physics with 19+ years of teaching experience.