Phenol when condensed with phthalic anhydride in the presence of conc. `H_(2)SO_(4)`, yields `,`

Which one of the following phenols does not give colour when condensed with phthalic anhydride in presence of conc. H_2SO_4 ?

Catechol on heating with phthalic anhydridee in the presence of conc. H_(2)SO_(4) gives :

When phenol is heated with phthalic anhydride in the presence of conc. H_(2)SO_(4) , the product is :

Phenol is heated with phthalic anhydride in the presence of conc. H_(2)SO_(4) . The product gives pink colour with alkali. The product is

Phenol is heated with phthalic anhydride in the presence of conc. H_(2)SO_(4) . The product gives pink colour with alkali. The product is

Chlorobenzene when condensed with chloral in the presence of conc. H_(2)SO_(4) yields :

What happens when phenol is treated with phthalic anhydride in presence of conc. H_2SO_4 ?

Which of the following compound undergoes condensation with phthalic anhydride in the presence of hot concentrated H_(2)SO_(4) to form phenolphthalein?