JEE Main Chemistry question

Both HCHO and CH₃CHO give similar reactions with all the reagents except

(A)Schiff reagent
(B)Fehling solution
(C)Ammoniacal AgNO₃
(D)AmmoniaCorrect

Answer: (D)

Solution

Both formaldehyde and acetaldehyde are simple aldehydes and both give positive tests with Schiff's reagent, Fehling's solution and Tollens' (ammoniacal AgNO₃) reagent — these tests only require an oxidizable –CHO group, present in both. Their reactions with

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Question ID VK-149419