AIPMT MAINS2011Chemistry-Organic Chemistry
AIPMT MAINS 2011 Chemistry Nucleophilic Substitution Reactions MCQ Question
Type: MCQ-conceptual-Medium-Class 11
Consider the reactions:
(i) (CH₃)₂CH−CH₂Br (CH₃)₂CH−CH₂OC₂H₅ + HBr
(ii) (CH₃)₂CH−CH₂Br (CH₃)₂CH−CH₂OC₂H₅ + Br⁻
The mechanisms of reactions (i) and (ii) are respectively
A
S_N₂ and S_N₂
B
S_N₂ and S_N₁
C
S_N₁ and S_N₂
D
S_N₁ and S_N₁
Correct Answer
Option A
Detailed Explanation
Both reactions proceed via the S_N₂ mechanism due to the presence of a strong nucleophile and a primary substrate, which favors bimolecular nucleophilic substitution.
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