Phenolphthalein is obtained by heating phthalic anhydride with conc. $H_{2} {S O}_{4}$ and:

benzyl alcohol

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benzene

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phenol

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benzoic acid

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Solution

The correct option is B phenol
Phenolphthalein is obtained by heating phthalic anhydride with conc. $H_{2} S O_{4}$ and Phenol.

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