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NEET2008ChemistryAlcohols Phenols and EthersActual

When phenol reacts with phthalic anhydride in presence of ( H ₂ SO ₄ ) and heated and hot reaction mixture is poured in ( NaOH ) solution, then product formed is

Options

  1. Aalizarin
  2. Bmethyl orange
  3. Cfluorescein
  4. Dphenolphthalein.

Correct answer

D. phenolphthalein.

Step-by-step solution

Phenol couples with phthalic anhydride in presence of conc. H ₂ SO ₄ to form phenolphthalein which is used as an indicator :

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