Target Exam

CUET

Subject

Chemistry

Chapter

Organic: Aldehydes, Ketones and Carboxylic Acids

Question:

The ammonia derivatives of carbonyl compounds obtained as colorless precipitate are

(A) Oxime
(B) Hydrazone
(C) Phenyl hydrazone
(D) Semicarbazone

Choose the correct answer from the options given below:

Options:

(A), (B) and (D) only

(A), (B) and (C) only

(A), (B), (C) and (D)

(B), (C) and (D) only

Correct Answer:

(A), (B), (C) and (D)

Explanation:

The correct answer is Option (3) → (A), (B), (C) and (D)

All listed compounds are ammonia derivatives of carbonyl compounds formed by the reaction of aldehydes/ketones with reagents derived from ammonia:

  • Oxime → from hydroxylamine (NH₂OH)
  • Hydrazone → from hydrazine (NH₂NH₂)
  • Phenylhydrazone → from phenylhydrazine (C₆H₅NHNH₂)
  • Semicarbazone → from semicarbazide (NH₂NHCONH₂)