Computer · Environmental Engineering
Identify the correct combinations with respect to primary and secondary air pollutants: 1. Primary air pollutant — Carbon dioxide2. Secondary air pollutant — Peroxyacetyl nitrate3. Primary air pollutant — Sulphur dioxide4. Secondary air pollutant — Formaldehydes
Verified Solution4 OptionsUpdated: October 2026👁️1 View
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- 12, 3 & 4 only
- 21, 2 & 3 only
- 31, 2, 3 & 4✓
- 41, 3 & 4 only
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1, 2, 3 & 4
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