A compound ' X ' when treated with phthalic anhydride in presence of concentrated H₂ SO₄ yields ' Y '. ' Y ' is used as an acid/base indicator. ' X ' and ' Y ' are respectively

(B) Carbolic acid, Phenolphthalein

(C) Salicylaldehyde, Phenolphthalein

Principles Related to Practical Chemistry: JEE Main 2023 Chemistry question

JEE Main 2023 · 8 Apr, Evening shift · Q1760

JEE Main 20238 Apr, Evening shiftChemistryMediumPrinciples Related to Practical Chemistry54× since 2004

A compound '

\mathrm{X}

' when treated with phthalic anhydride in presence of concentrated

\mathrm{H}_{2} \mathrm{SO}_{4}

yields '

\mathrm{Y}

'. '

\mathrm{Y}

' is used as an acid/base indicator. '

\mathrm{X}

' and '

\mathrm{Y}

' are respectively