A) phenolphthalein
B) bakelite
C) salicylic acid
D) fluorescein
Correct Answer: A
Solution :
Phenol and phthalic anhydride on heating in presence of cone. \[{{H}_{2}}S{{O}_{4}}\] produce phenolphthalein which produce pink colour with alkali.You need to login to perform this action.
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