Match List - I with List - II. Pair of Compounds and Type of Isomers
Q. Match List - I with List - II.

List - I
Pair of Compounds

A. 2-Methylpropene and but-1-ene
B. Cis-but-2-ene and trans-but-2-ene
C. 2-Butanol and diethyl ether
D. But-1-ene and but-2-ene

List - II
Type of Isomers

I. Stereoisomers
II. Position isomers
III. Chain isomers
IV. Functional group isomers

Choose the correct answer from the options given below :
A. A-III, B-I, C-IV, D-II
B. A-II, B-I, C-IV, D-III
C. A-I, B-IV, C-III, D-II
D. A-III, B-I, C-II, D-IV
Correct Answer: A

Explanation (Concept Clarity)

A. 2-Methylpropene and but-1-ene

Both have same molecular formula (C₄H₈) but different carbon skeleton. Hence, they are chain isomers. A → III.

B. Cis-but-2-ene and trans-but-2-ene

They differ in spatial arrangement around double bond. Hence, stereoisomers (geometrical isomers). B → I.

C. 2-Butanol and diethyl ether

Both have molecular formula C₄H₁₀O but different functional groups (alcohol and ether). C → IV.

D. But-1-ene and but-2-ene

Position of double bond differs. Hence, position isomers. D → II.

Final Matching: A-III, B-I, C-IV, D-II

Correct Option: A

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