Stereoisomerism & Optical Activity — NEET Practice MCQs

Practice Stereoisomerism and Optical Activity MCQs for NEET with worked answers and concept notes. Ideal for quick chapter revision and related ChemNexa mock tests.

Stereoisomerism and Optical Activity Revision Guide for NEET Chemistry

Stereoisomerism and Optical Activity is part of NEET Chemistry preparation. A strong revision plan should combine concept review with exam-style questions so that definitions, relationships, calculations and exceptions are recalled accurately.

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Important Topics

Core definitions and principles
Important equations or relationships
Common applications and examples
Frequently confused concepts
Exam-style multiple-choice questions
Error review and targeted revision

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Concept Revision

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Top 5 Stereoisomerism and Optical Activity MCQs with Answers

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NEET Chemistry · Stereoisomerism and Optical Activity · Very Very Hard

1. Geometrical isomerism commonly requires:

A. Restricted rotation
B. Ionic bond only
C. No double bond/ring
D. Free rotation

Answer: A

Explanation: Restricted rotation allows cis/trans or E/Z forms.

NEET Chemistry · Stereoisomerism and Optical Activity · Very Very Hard

2. A chiral carbon is bonded to:

A. Four different groups
B. No hydrogen necessarily only
C. Two groups only
D. Four identical groups

Answer: A

Explanation: A tetrahedral carbon with four different substituents is stereogenic.

NEET Chemistry · Stereoisomerism and Optical Activity · Very Very Hard

3. Enantiomers are:

A. Non-superimposable mirror images
B. Identical compounds
C. Constitutional isomers
D. Cis-trans pair always

Answer: A

Explanation: Enantiomers are mirror-image stereoisomers.

NEET Chemistry · Stereoisomerism and Optical Activity · Very Very Hard

4. Racemic mixture is optically:

A. Inactive overall
B. Always meso
C. Strongly dextrorotatory
D. Strongly levorotatory

Answer: A

Explanation: Equal enantiomers cancel rotations.

NEET Chemistry · Stereoisomerism and Optical Activity · Very Very Hard

5. Meso compound is optically inactive due to:

A. Internal symmetry
B. Ionic bonding
C. No carbon atoms
D. Racemic composition

Answer: A

Explanation: Internal compensation leads to optical inactivity.