Question

The percentage of nitrogen in urea is about

• A. 46
• B. 85
• C. 18
• D. 28

Answer 1

Answer: (A)

46

Answer 2

Urea- $NH_{2} - CO - NH_{2}$

$\mathbf{\because}$ 60gm of urea contains 28gm of nitrogen

$\mathbf{\therefore}$ 100gm of urea contains $\frac{28}{60} \times 100 = 46.66$.