question_answer

Consider the following compounds                                                                         [NEET 2015 ]

(i)

(ii)

(iii)  hyperconjugation occurs in

A) I only

B) II only

C) III only

D) I and III

Correct Answer: C

Solution :

[c] Hyperconjugation occurs through the H-atoms present on the carbon atom next to the double bond i.e. cc-hydrogen atoms.

There is no a-H in the structures I and II.

So, hyperconjugation occurs in structure III only

i.e.