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Carbon is often deposited in the exhaust-pipe of cars bec...

Carbon is often deposited in the exhaust-pipe of cars because of the?

A.

presence of carbon in petrol

B.

presence of carbon in petrol

C.

incomplete combustion of petrol

D.

presence of additives in petrol

E.

contamination of petrol with diesel

Correct answer is C

The incomplete combustion process that occurs in an engine; result to the emission of carbon monoxide (CO) as a waste product from the exhaust system of vehicles.

Environmental carbon monoxide is produced by incomplete combustion process from any carbon containing fuel.