A compound (x) with molar mass 108 g mol -1 undergoes acetylation to give product with molar mass 192 g mol -1 . The number of amino groups in the compound ( x ) is .

Chemistry · Nitrogen Containing Organic Compounds

JEE Main 2024 — 31 January, Shift 2 — Question 74

A compound (x) with molar mass $108 \mathrm{~g} \mathrm{~mol}^{-1}$ undergoes acetylation to give product with molar mass $192 \mathrm{~g} \mathrm{~mol}^{-1}$ . The number of amino groups in the compound $(\mathrm{x})$ is $\qquad$ .

Answer: 2

Numerical answer — enter this value.

Step-by-step solution

Gain in molecular weight after acylation with one $-\mathrm{NH}_{2}$ group is 42 .

Total increase in molecular weight $=84$

$\therefore$ Number of amino group in $\mathrm{x}=\frac{84}{42}=2$

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Exam: JEE Main 2024
Paper: 31 January, Shift 2
Subject: Chemistry
Chapter: Nitrogen Containing Organic Compounds
Topic: Physical properties, Tests & Uses of Amines

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Answer: 2

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