MHT CET 2024 Chemistry question

Which from following compounds is NOT a mono carboxylic acid?

(A)Phthalic acidCorrect
(B)Salicylic acid
(C)o-Toluic acid
(D)Benzoic acid

Answer: (A)

Solution

The number of -COOH groups decides the class. Phthalic acid is benzene-1,2-dicarboxylic acid, , having two -COOH groups, so it is a dicarboxylic acid and therefore NOT a monocarboxylic acid: option (A).

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Question ID VK-092935