ELITE COMPREHENSIVE
Advanced Organic Chemistry Exam
Mixed Mechanisms: Sn1, Sn2, E1, E2 Reaction
Prediction Paper 1
Graduate Foundation Organic Chemistry Level
Spring Examination May 2026
Examination Duration: 3 Hours 30 Minutes
Total Marks: 100
GENERAL INSTRUCTIONS
Answer all questions.
Show complete reaction mechanisms using curved-arrow notation where appropriate.
SECTION A — MULTIPLE CHOICE QUESTIONS
(20 Questions × 2 Marks = 40 Marks)
Select the best answer for each question.
1.
1
Page
, Which factor most strongly favors SN2 substitution?
A. Tertiary substrate
B. Weak nucleophile
C. Polar aprotic solvent
D. Carbocation stability
2.
The rate law for SN1 reactions is:
Rate
SN1
=k[RX]
A. First-order overall
B. Second-order overall
C. Third-order overall
D. Independent of substrate concentration
3.
The rate law for E2 reactions is:
2
Page
Advanced Organic Chemistry Exam
Mixed Mechanisms: Sn1, Sn2, E1, E2 Reaction
Prediction Paper 1
Graduate Foundation Organic Chemistry Level
Spring Examination May 2026
Examination Duration: 3 Hours 30 Minutes
Total Marks: 100
GENERAL INSTRUCTIONS
Answer all questions.
Show complete reaction mechanisms using curved-arrow notation where appropriate.
SECTION A — MULTIPLE CHOICE QUESTIONS
(20 Questions × 2 Marks = 40 Marks)
Select the best answer for each question.
1.
1
Page
, Which factor most strongly favors SN2 substitution?
A. Tertiary substrate
B. Weak nucleophile
C. Polar aprotic solvent
D. Carbocation stability
2.
The rate law for SN1 reactions is:
Rate
SN1
=k[RX]
A. First-order overall
B. Second-order overall
C. Third-order overall
D. Independent of substrate concentration
3.
The rate law for E2 reactions is:
2
Page