Chemistry · Isomerism
JEE Main 2026 — 21 January, Evening Shift — Question 49
Match List-I with List-II.
| List-I Pair of Compounds | List-II Type of Isomers |
|---|---|
| A. 2-Methylpropene and but-1-ene | I. Stereoisomers |
| B. Cis-but-2-ene and trans-but-2-ene | II. Position isomers |
| C. 2-Butanol and diethyl ether | III. Chain isomers |
| D. But-1-ene and but-2-ene | IV. Functional group isomers |
Choose the correct answer from the options given below:
- Option A:Correct
A-III, B-I, C-IV, D-II
- Option B:
A-III, B-I, C-II, D-IV
- Option C:
A-I, B-IV, C-III, D-II
- Option D:
A-II, B-I, C-IV, D-III
Answer: A
Step-by-step solution
A: 2-Methylpropene and but-1-ene are chain isomers (different carbon skeletons). B: cis/trans-but-2-ene are stereoisomers. C: 2-butanol and diethyl ether are functional group isomers (alcohol vs ether). D: but-1-ene and but-2-ene are position isomers (double bond position differs). Hence A-III, B-I, C-IV, D-II, which is option A.
Answer key and solution verified before publishing.
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- Exam
- JEE Main 2026
- Subject
- Chemistry
- Chapter
- Isomerism
- Topic
- Optical Isomerism