Question Detail

CHM 102 Carbonyl Compounds Objective Question
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Question

Which reagent is used in the Tollens' test to distinguish aldehydes from ketones?
Options
A Fehling's solution
B Ammoniacal silver nitrate (Ag(NH₃)₂⁺)
Correct Answer
C Brady's reagent (2,4-DNPH)
D NaBH₄
Correct Answer

Option B is the correct answer.

Detailed Explanation

Tollens' reagent (ammoniacal silver nitrate) is reduced by aldehydes to metallic silver, forming a silver mirror on the test tube. Ketones give a negative test.

Hint

Silver mirror test.

Question Info

Course: CHM 102
Topic: Carbonyl Compounds
Type: Objective
Difficulty: Not specified
Question 631 of 1999
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