Environment & Ecology · Environmental Engineering
Which of the following substances is classified as a secondary air pollutant because it is formed through chemical reactions in the atmosphere rather than being directly emitted?
Verified Solution4 OptionsUpdated: October 2026👁️1 View
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- 1Ground-level ozone✓
- 2Carbon monoxide
- 3Particulate matter
- 4Hydrocarbons
Correct answer
Ground-level ozone
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