Correct Answer - Option 3 : Sulphur dioxide
The correct answer is Sulphur Dioxide.
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The substance that causes the maximum air pollution is Sulphur dioxide.
- Sulfur dioxide or sulphur dioxide is the chemical compound with the formula SO2.
- It is a toxic gas responsible for the smell of burnt matches.
- Pungent smelling colourless gas produced from mostly volcanic activities, industrial processes, and production of sulphuric acid.
- Sulfur dioxide causes a range of harmful effects on the lungs.
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Pollutants are the substances that cause pollution; air pollution is caused by air pollutants.
- This can be in the form of excessive gases like carbon dioxide and other vapours that cannot be effectively removed through natural cycles, such as the carbon cycle or the nitrogen cycle.
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Carbon monoxide:
- Carbon monoxide is a colourless, odourless, and tasteless flammable gas that is slightly less dense than air.
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Description -
- Highly toxic, Produced from internal combustion engines due to incomplete combustion, Other sources are volcanoes, forest fires, etc.
Greenhouse gas.
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Smoke:
- Smoke is a collection of airborne particulates and gases emitted when a material undergoes combustion or pyrolysis, together with the quantity of air that is entrained or otherwise mixed into the mass.
- It is commonly an unwanted by-product of fires but may also be used for pest control, communication (smoke signals), defensive and offensive capabilities in the military (smoke screen), cooking, or smoking (tobacco, cannabis, etc.).
