Which of the following compounds contains the highest percentage of nitrogen by mass? [N=14, H=1, O=16]

Type: MCQ • Marks: 1

A. Ammonia (NH₃)

B. Nitric acid (HNO₃)

C. Ammonium nitrate (NH₄NO₃)

D. Nitrogen dioxide (NO₂)

Explanation

Ammonia has molar mass 17, with 14 g N, giving ~82.3% nitrogen content, highest among choices.

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Class 9th Science (MCQ)

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