Q. Consider the Following
1.Ozone (O₃)
2.Sulfuric acid (H₂SO₄)
3.Nitric acid (HNO₃)
4.Carbon monoxide (CO)
How many of the above are secondary pollutants?
Answer: C
Notes:
Explanation:
- Ozone (O₃) is formed when primary pollutants like NOₓ and VOCs react in the presence of sunlight.
- Sulfuric acid (H₂SO₄) forms when sulfur dioxide (SO₂) reacts with water and oxygen in the atmosphere.
- Nitric acid (HNO₃) forms when nitrogen oxides (NOₓ) react with water.
- Carbon monoxide (CO) is a primary pollutant, directly emitted from vehicle exhausts and burning of fossil fuels.
Source- TH
