Which of the following is not an air pollutant?
Correct answer: A. N2
- A. N2
- B. N2O
- C. NO
- D. CO
Explanation
Nitrogen is an inert gas - meaning it doesn't chemically react with other gases - and it isn't toxic
This question appeared on the NUMS 2014 paper, which you can sit online with every answer explained.
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About Atmospheric Pollution
Atmospheric pollution covers harmful gases and particles released by vehicles, industries, burning fuels and natural sources. It includes carbon monoxide, sulfur and nitrogen oxides, particulate matter, smog, acid rain, the greenhouse effect and ozone depletion, along with their causes, chemical reactions, environmental effects and control methods.
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