Q. 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
A) Alizarin
B) Methyl orange
C) Fluorescein
D) Phenolphthalein
Explanation
(d)
When phenol reacts with phthalic anhydride in presence of conc. $H_{2}SO_{4}$ and heated, then mixture is poured in NaOH solution the product formed is phenolphthalein.
Reviewed by Dr. Abubacker
Physics Educator & NEET/JEE Specialist
Ph.D. in Physics with 19+ years of teaching experience.