Chemistry - GOC Question with Solution | TestHub

Carbocation rearrangement occurs only if a more stable carbocation can form.

In (A), lone pair on –NH stabilizes the carbocation by resonance, so no need to rearrange.

In (B), cyclohexyl carbocation is already reasonably stable, no significant gain on shifting.

In (C), the carbocation is less stable and can undergo alkyl shift.

This shift leads to formation of a more stable tertiary carbocation.

Hence rearrangement is favoured in (C).

Therefore, correct answer is (C).