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  4. The condensation product of reaction between phenol and phthalic anhydride:

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Q. The condensation product of reaction between phenol and phthalic anhydride:

Rajasthan PMTRajasthan PMT 1999

Solution:

Phthalien reaction (phthalein condensation) phenol $+$ phthalic anhydride $\rightarrow$ HPh phenophthalien. $HPh$ acts as indicator.