Question

$S_{N}1$ & $S_{N}2$ product are same in (excluding stereoisomer):

• A.
• B.
• C.
• D.

Answer 1

Answer: (B), (C)

As in (b) and (c) reactants, there is no possibility for intermediate carbocation to rearrange so B and C will give same $S_{N}1and{S}_{N}2$ product.
Carbocation intermediate of (a) and (d) undergo rearrangements hence, it will give different products on $S_{N}1$ and $S_{N}2$ reaction.