MHT CET 2026 Chemistry question

Which of following observations is found in Tollens test for aldehydes?

(A)The formation of pink or magenta color upon the addition of the reagent to the sample solution
(B)Formation of an Ag layer on sides of test tube upon addition and warming of the reagent.Correct
(C)Formation of brick-red precipitate upon heating with reagent
(D)Appearance of red color upon shaking with reagent

Answer: (B)

Solution

Tollens' reagent is ammoniacal silver nitrate, . On warming with an aldehyde, the aldehyde is oxidised to the carboxylate and is reduced to metallic silver, which deposits as a shining silver mirror on the walls of

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Question ID VK-099397