Asked in PMC Practice Test 13 (2021) 2021Moderate

Which of the following compound is an amide?

Correct answer: B. NH2COCH3

  • A. NH4CNO
  • B. NH2COCH3
  • C. NH2CONH2
  • D. NH2COONH

Explanation

OPTION A: NH4CNO is not an amide because it contains a nitrogen atom bound to hydrogen, not to a carbonyl group (C=O).OPTION B: Amides are functional groups in which a carbonyl carbon atom is linked by a single bond to a nitrogen atom and either a hydrogen or a carbon atom. OPTION C: NH2CONH2 is not an amide because it is a peptide bond, not a molecule containing an amide functional group (R-C(=O)-NR'2).OPTION D: NH2COONH is not an amide because it lacks the carbonyl group (C=O) that is essential for an organic compound to be classified as an amide.

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