Question

The percentage of nitrogen in urea is about

• A. 28
• B. 85
• C. 18
• D. 46

Answer 1

Answer: (D)

Urea: $N{H}_2-CO-N{H}_2$

$\because 60g$ of urea contains $28g$ of nitrogen

$\therefore 100g$ of urea contains $\frac{28}{60}\times 100=46.66$