Question

7) Vehicles give out smoke contains?
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Answer 1

Smoke from vehicles is generally caused by unburnt or partly burnt fuel. Burning engine oil can also cause a smoky exhaust. Black smoke is generally caused by incompletely burnt diesel fuel. Blue, white and other coloured smoke is generally caused by burning engine oil or unburnt fuel vapour.

Answer 2

Answer:

carbon dioxide, nitrogen, water vapor, and oxygen in unconsumed air. Carbon monoxide, unburned fuel, nitrogen oxides, and particulate matter such as mercury are also present in vehicle...