Home Chemistry Aldehydes, Ketones & Carboxylic Acid General A compound with molecular mass 180 is acylat…
Chemistry Aldehydes, Ketones & Carboxylic Acid General Single Correct MCQ
Published on: August 14, 2026

A compound with molecular mass 180 is acylated with CH3COCl to get a compound with molecular mass 390. The number of amino groups present per molecule of the former compound is :

A
2
B
5
C
4
D
6

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Verified by Experts
The correct answer is:
B

By reaction with one mole of with one –NH2 group the molecular mass increases with 42 unit. Since the mass increases by (390 – 180) = 210 hence the number of –NH2 groups is 5.

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