Raw materials for urea production are
A
CO<sub>2</sub> and N<sub>2</sub>
B
CO<sub>2</sub>, H<sub>2</sub> and N<sub>2</sub>
C
NH<sub>3</sub> and CO
D
HNO<sub>3</sub> and CaCO<sub>3</sub>
Correct Answer: CO<sub>2</sub>, H<sub>2</sub> and N<sub>2</sub>