Select the major air pollutant:
Correct answer: D. All are correct
- A. CO
- B. Mist
- C. Hydrogen sulphide
- D. All are correct
Explanation
Air pollution is caused by a variety of substances. Carbon monoxide (CO) is a major gaseous pollutant, while mist is a particulate pollutant. Hydrogen sulphide is another toxic gas. All of these contribute to air pollution.
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