Question Detail

CHM 102 Carbonyl Compounds Objective Question
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Question

Which reagent is used to test for the presence of a carbonyl group (both aldehydes and ketones) by forming a yellow/orange precipitate?
Options
A Tollens' reagent
B Fehling's solution
C 2,4-Dinitrophenylhydrazine (Brady's reagent)
Correct Answer
D NaBH₄
Correct Answer

Option C is the correct answer.

Detailed Explanation

2,4-Dinitrophenylhydrazine (Brady's reagent) reacts with both aldehydes and ketones to form brightly colored (yellow/orange/red) hydrazone precipitates, confirming the presence of a carbonyl group.

Hint

Hydrazone formation.

Question Info

Course: CHM 102
Topic: Carbonyl Compounds
Type: Objective
Difficulty: Not specified
Question 633 of 1999
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