Aldehydes, Ketones and Carboxylic Acids · Class 12 · CBSE · Science Chemistry
Which of the following reagents can be used to distinguish between benzaldehyde and acetaldehyde?
Practice question from Aldehydes, Ketones and Carboxylic Acids (Class 12 · CBSE · Science Chemistry), with the correct answer and a step-by-step solution.
medium · MCQ · Q-8758F3
Which of the following reagents can be used to distinguish between benzaldehyde and acetaldehyde?
- A.Tollens' reagent
- B.Fehling's solution
- C.Iodine and sodium hydroxideCorrect answer
- D.2,4-Dinitrophenylhydrazine
Solution
Acetaldehyde contains a group and thus gives a positive iodoform test with , whereas benzaldehyde does not. Both give positive Tollens' tests and 2,4-DNP tests, and neither gives a positive Fehling's test.
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