Which of the following substances acts as a gaseous pollutant?
Correct answer: D. All of the above
- A. NO
- B. NO2
- C. SO2
- D. All of the above
Explanation
Nitric oxide (NO), nitrogen dioxide (NO2), and sulfur dioxide (SO2) are all major gaseous air pollutants. They are primarily produced by the combustion of fossil fuels and contribute to problems like smog and acid rain.
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