An unsaturated hydrocarbon X absorbs two hydrogen molecules on catalytic hydrogenation, and also gives the following…
Hydrocarbons · Class 11 · JEE Main Previous Year Question
An unsaturated hydrocarbon X absorbs two hydrogen molecules on catalytic hydrogenation, and also gives the following reaction:
- a✓
Option A
- b
Option B
- c
Option C
- d
Option D
Option A
Step 1: Analyze the clues
- X absorbs 2 mol → 2 degrees of unsaturation from double bonds
- X is a hydrocarbon
- X undergoes the reaction shown (likely Diels-Alder with a dienophile, or electrophilic addition)
Answer: Option (a) — Cyclohexa-1,3-diene
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