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Subject - Chemistry:

Basics

MCQ - 72-2258

Question:

Which of the following reagents will give similar results for both butanone and butanal?

  1. Acidified aqueous potassium dichromate (VI)
  2. An alkaline solution containing complexed Cu2+ ions (Fehling’s solution)
  3. Iodine and aqueous sodium hydroxide
  4. An alkaline solution containing complexed Cu2+ ions (Fehling’s solution)

Correct Answer: D

Explanation:

2,4-dinitrophenylhydrazine reacts with a carbonyl to give orange precipitates of 2,4-dinitrophenylhydrazone irrespective of whether the carbonyl is a ketone or an aldehyde.

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Read the MCQ statement: Which of the following reagents will give similar results for both butanone and butanal? , keenly and apply the method you have learn through the video lessons for Basics to give the answer. Record your answer and check its correct answer and video explanation for MCQ No. 72-2258.

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