Environment & Ecology · Environmental Science
Consider the following statements regarding primary and secondary pollutants: A. Secondary pollutants are formed only through photochemical reactions involving sunlight. B. Peroxyacetyl nitrate (PAN) is a secondary pollutant formed from NOx and VOCs. C. Primary pollutants can be both natural and anthropogenic in origin. D. Ozone in the troposphere is always a primary pollutant. Which of the above statements are correct?
Verified Solution4 OptionsUpdated: October 2026👁️1 View
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- 1A, B and C only
- 2B, C and D only
- 3B and C only✓
- 4A and D only
Correct answer
B and C only
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