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  4. Phenol on heating with phthalic anhydride and cone. H2SO4 gets converted to

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Q. Phenol on heating with phthalic anhydride and cone. $ {{H}_{2}}S{{O}_{4}} $ gets converted to

Rajasthan PETRajasthan PET 2004

Solution:

Correct answer is (a) phenolphthalein

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