Question

Oxides of sulphur and nitrogen are pollutants of:

• A. Water
• B. Air
• C. Soil
• D. Both B and C

Answer 1

The correct option is B Air

Nitrogen dioxide $\left(N{O}_2\right)$, sulfur dioxide $\left(S{O}_2\right)$, and carbon monoxide are important ambient air pollutants.

High-intensity, confined space exposure to $N{O}_2$ has caused a catastrophic injury to humans, including death. Ambient $N{O}_2$ exposure may increase the risk of respiratory tract infections through the pollutant's interaction with the immune system.

Sulphur dioxide $\left(S{O}_2\right)$ contributes to respiratory symptoms in both healthy patients and those with underlying pulmonary disease.

Hence, the correct option is $B$