Question

Match List - I with List - II.

Choose the correct answer from the options given below :

• A. A-II, B-I, C-IV, D-III
• B. A-I, B-IV, C-III, D-II
• C. A-III, B-I, C-II, D-IV
• D. A-III, B-I, C-IV, D-II

Hint:

Geometric isomers (cis/trans) are a common example of stereoisomers when restricted rotation is present.

Answer 1

The Correct Option is D

Step 1: Understanding the Concept:
Isomers are molecules with the same molecular formula but different arrangements of atoms. Structural isomers include chain, position, and functional isomers. Stereoisomers include geometric and optical isomers.

Step 2: Detailed Explanation:
A. 2-Methylpropene and but-1-ene: Both have the formula \( C_4H_8 \). 2-Methylpropene has a branched carbon skeleton, whereas but-1-ene is a straight chain. These are chain isomers (III).
B. cis-but-2-ene and trans-but-2-ene: These differ in the spatial arrangement of groups around the double bond. These are geometric isomers, a sub-type of stereoisomers (I).
C. 2-Butanol and diethyl ether: Both have the formula \( C_4H_{10}O \). One is an alcohol and the other is an ether. These are functional group isomers (IV).
D. But-1-ene and but-2-ene: Both are straight-chain butenes, but they differ in the location of the double bond (at C1 vs C2). These are position isomers (II).

Step 3: Final Answer:
The correct matching is A-III, B-I, C-IV, D-II.