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Q.

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

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answer is 5.

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Detailed Solution

Mol mass difference = 390-180= 210

molecular mass Question Image (one H-atom less) 

Number of acylated groups  =21042=5

Number of amino groups = 5

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