Environment & Ecology · Environment
Which of the following is categorized as a primary air pollutant?
Verified Solution4 OptionsUpdated: October 2026👁️1 View
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- 1Photochemical Smog
- 2Peroxyacetyl nitrate (PAN)
- 3Sulfur dioxide (SO2)✓
- 4Ozone (O3)
Correct answer
Sulfur dioxide (SO2)
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