JEE Main Chemistry question

Which of the following aldehydes gives a red precipitate with Fehling solution?

(A)Benzaldehyde
(B)SalicylaldehydeCorrect
(C)p-Nitrobenzaldehyde
(D)Anisaldehyde

Answer: (B)

Solution

Fehling's solution ordinarily does not react with aromatic aldehydes such as benzaldehyde, p-nitrobenzaldehyde or anisaldehyde. Salicylaldehyde (2-hydroxybenzaldehyde) is an exception

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Question ID VK-149157