In the following reaction, 'X' is:
Hydrocarbons · Class 11 · JEE Main Previous Year Question
In the following reaction, 'X' is:
- a
- b
- c✓
2-methylpentane (branched alkane)
- d
Cyclohexane
2-methylpentane (branched alkane)
When heated in the presence of gas and anhydrous , n-alkanes are isomerized to branched chain alkanes. The primary product has one side chain of methyl. The reaction takes place as:
Option (c) — 2-methylpentane (the branched alkane shown in the structure) is correct answer.
Key Points to Remember:
- isomerizes n-alkanes to branched alkanes
- This is the basis of catalytic reforming in petroleum refining
- The major product is the singly branched isomer (not the most branched)
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