question_answer

Compound(s) that on hydrogenation produce(s) Optically inactive compound(s) is/are

A)

B)

C)  

D)      

Correct Answer: B

Solution :

In option [b] hydrogenation of olefinic bond will render compound achiral as two identical ethyl group will come at the a-carbon, which was earlier chiral carbon. Thus, it gives optically inactive compound on hydrogenation. However, in [a], [c] and [d] chirality will be retained even after hydrogenation.

[a]

[b]

[c]

[d]