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CGP EDU Academic Team
Published on: August 14, 2026
A compound with molecular mass 180 is acylated with CH 3 COCl to get a compound with molecular mass 390. The number of amino groups present per molecule of the former compound is :
Text Solution
Verified by ExpertsThe correct answer is:
B
By reaction with one mole of 
with one –NH 2 group the molecular mass increases with 42 unit. Since the mass increases by (390 – 180) = 210 hence the number of –NH 2 groups is 5. 
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