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Topics
Introduction
Air
Uses of Air
Atmosphere
Composition of Air
Nitrogen
Oxygen
Carbon dioxide
Water Vapour
Dust/Smoke
Class 6 Chemistry Air Around us
Dust/Smoke
Dust/Smoke
Dust is the small particles suspended freely in the air.
Smoke is made up of water vapour and gases which pollute the air.
Causes of Smoke:-
Combustion of different things
Forest fire
Volcanic Eruptions
Smoke from cigarettes
Smoke from vehicles and factories.
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