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Question

Sodium hydroxide is present in the _____ state, in the preparation of phenol from benzene sulphonic acid.

A
liquid
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B
solid
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C
molten
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D
none of these
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Solution

The correct option is B molten
Sodium hydroxide is present in the molten state, in the preparation of phenol from benzenesulphonic acid. When sodium benzene sulphonate is heated to 350 deg C in presence of NaOH, sodium phenoxide is obtained.
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