Phenol is treated with excess bromine water. The product is

A2-bromophenol
B2,4,6-tribromophenol
C4-bromophenol
Dbromobenzene

Answer: B

The OH group strongly activates the ring, and in a polar solvent like water phenol ionises partly. Substitution occurs at all three positions ortho and para to OH, giving a white precipitate of 2,4,6-tribromophenol.

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