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Questions and Answers
What is the definition of an air pollutant?
What is the definition of an air pollutant?
- A substance present in the air in an amount exceeding normal concentrations (correct)
- A substance that is inhaled only by some living in the surroundings
- A substance that is always present in the air
- A substance that is not inhaled by anyone
What are the important and harmful polluting gases mentioned in the text?
What are the important and harmful polluting gases mentioned in the text?
- Carbon monoxide, carbon dioxide, ozone, oxides of sulphur and nitrogen (correct)
- Sulfur dioxide, hydrogen peroxide, nitrogen monoxide, and carbon tetrachloride
- Methane, helium, radon, and argon
- Hydrogen, nitrogen dioxide, ammonia, and chlorine
What is the composition of air in terms of nitrogen and oxygen?
What is the composition of air in terms of nitrogen and oxygen?
- About 30% nitrogen and 70% oxygen
- About 90% nitrogen and 10% oxygen
- About 50% nitrogen and 50% oxygen
- About 79% nitrogen and 21% oxygen (correct)
What may prove to be as or a more important cause of health problems than outdoor air pollution?
What may prove to be as or a more important cause of health problems than outdoor air pollution?
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What is the reason for experiencing a feeling of 'suffocation' in a closed environment as per the text?
What is the reason for experiencing a feeling of 'suffocation' in a closed environment as per the text?
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