ELITE COMPREHENSIVE
ADVANCED ORGANIC CHEMISTRY EXAM
E1 vs E2 Elimination Mechanisms & SN1
Competition
Advanced Undergraduate / Honors Organic
Chemistry Level
Spring Examination May 2026
Examination Duration: 3 Hours
Total Marks: 100
GENERAL INSTRUCTIONS
Answer all questions.
Show complete mechanisms using curved-arrow notation where required.
Clearly indicate stereochemistry, regiochemistry, and intermediates.
SECTION A — MULTIPLE CHOICE QUESTIONS
(20 Questions × 2 Marks = 40 Marks)
1
Select the best answer for each question.
Page
, 1.
Which mechanism proceeds through a carbocation intermediate?
A. SN2
B. E2
C. E1
D. Radical substitution
2.
The rate law for an E1 reaction is:
Rate
E1=k[RX]
A. First-order overall
B. Second-order overall
C. Third-order overall
D. Independent of substrate concentration
3.
The rate law for an E2 reaction is:
2
Page
ADVANCED ORGANIC CHEMISTRY EXAM
E1 vs E2 Elimination Mechanisms & SN1
Competition
Advanced Undergraduate / Honors Organic
Chemistry Level
Spring Examination May 2026
Examination Duration: 3 Hours
Total Marks: 100
GENERAL INSTRUCTIONS
Answer all questions.
Show complete mechanisms using curved-arrow notation where required.
Clearly indicate stereochemistry, regiochemistry, and intermediates.
SECTION A — MULTIPLE CHOICE QUESTIONS
(20 Questions × 2 Marks = 40 Marks)
1
Select the best answer for each question.
Page
, 1.
Which mechanism proceeds through a carbocation intermediate?
A. SN2
B. E2
C. E1
D. Radical substitution
2.
The rate law for an E1 reaction is:
Rate
E1=k[RX]
A. First-order overall
B. Second-order overall
C. Third-order overall
D. Independent of substrate concentration
3.
The rate law for an E2 reaction is:
2
Page
