JEE Main Chemistry question

Benzaldehyde and acetone can be best distinguished using

(A)Fehling's solution
(B)Sodium hydroxide solution
(C)2,4-DNP
(D)Tollen's reagentCorrect

Answer: (D)

Solution

Tollens' reagent is reduced (silver mirror) only by benzaldehyde (an aldehyde) and not by acetone (a ketone), cleanly distinguishing the two. 2,4-DNP and Fehling's would not fully

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Question ID VK-149188