JEE Main · 2024 · 31 Jan 2024 · Shift 1 · Chapter_pending

The product of the following reaction is P .

The number of hydroxyl groups present in the product P is ____ .

Answer: 0

Solution

The reaction shown involves the reduction of phenol (which has one hydroxyl group attached to a benzene ring) using red phosphorus and HI under heating conditions (Δ).

This is a complete reduction reaction where:

The hydroxyl group (–OH) is removed
The aromatic ring is reduced
The product P is benzene (C₆H₆)

Benzene has no hydroxyl groups.

Therefore, the number of hydroxyl groups in product P = 0.

JEE Main · 2024 · 31 Jan 2024 · Shift 1 · Integer answer

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