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Which of the… (Class 12 Chemistry SQP 2024-25, Q12)

questionbuddy.in/q/cbse-12-chemistry-2024-25-sqp-q12-compound-gives-oxime-hydroxylamine

ChemistryCBSE Class 12 · Sample paper, session 2024-25 · 1 mark · MCQ

CBSE Class 12 Chemistry sample paper 2024-25: question 12

From the official CBSE sample question paper for 2024-25, section A, question 12, for 1 mark. Try it first; the hints and our step-by-step solution are below.

Q12 · 1 mark · MCQAldehydes, Ketones and Carboxylic Acids

Which of the following compound gives an oxime with hydroxylamine:

  1. (A)
  2. (B)
  3. (C)
  4. (D)

Source: official sample paper from cbseacademic.nic.in (PDF). See it in the full Sample paper 2024-25.

Hints

Open one hint at a time and try again before the next.

Hint 1

Oxime formation is a reaction of aldehydes and ketones.

Hint 2

Which option is a ketone?

Step-by-step solution

Each step shows the marks it earns, as an examiner would award them. Checked by an independent re-solve from the question paper.

  1. Oximes form when hydroxylamine adds to the carbonyl of an aldehyde or ketone and water is then lost.

  2. Acetone gives . Acids, anhydrides and acyl chlorides undergo substitution instead. Option (A).

    1 mark

Answer: , option (A)

Where the marks are

  • Identifies the ketone as the one that undergoes nucleophilic addition–elimination (1 mark)

Revise the chapter

Practise this chapterBoard-style questions from Aldehydes, Ketones and Carboxylic Acids, one at a time, marked against the answer key and marking points.Back to the full paperSample paper 2024-25: every question, by section.

The question is transcribed from the official paper; figures are described in words. The solution, hints and chapter tag are ours. Spotted an error? Write tosupport@questionbuddy.in.