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A compound X when treated with phthalic ...

A compound X when treated with phthalic anhydride in presence of concentrated `H_2SO_4`, yields `'Y'. 'Y'` is used as an acid base indicator. "X" and "Y' are respectively

A

Carbolic acid,Phenolphthalein

B

Anisole, methyl orange

C

Salicylaldehyde, Phenolphthalein

D

Toludine, Phenolphthalein

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