Question

Hyperconjugation occurs in which of the following?

• A.
• B.
• C.
• D.

Answer 1

Answer: (C), (D)

For the given free radicals, hyperconjugation will occur when there are $\alpha$-hydrogens present.
In option (a) and (b) there are no $\alpha$-hydrogens present whereas in (c) and (d), there is 1 $\alpha$-hydrogens present in each of the following as shown:

So, (c) and (d) are correct options.