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run at it's most efficient on latest fossil fuels it's less harmfull than having a cigarette

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Q: Petrol used in a car engine gives off exhaust fumes useful or harmful?
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Is petrol used in a car engine gives off exhaust fumes useful or harmful?

Harmful, because petrol fumes are produced by various engines that are considered to be harmful. Also, they pollute the environment.


Is petrol used in a car engine a harmful or useful?

Short answer Yes. Petrol is useful for running a engine, and extremely dangerous if misused.


Petrol used in a car engine useful or harmful?

The engine will not run without a supply of petrol so you would think it is useful.


When petrol used in a car engine harmful or useful?

The engine will not run without a supply of petrol so you would think it is useful.


Is it useful or harmful reaction when Petrol is used in car engine?

Petrol is British name for Gasoline


When petrol gives off exhaust fumes useful or harmful reaction?

It is harmful because it is killing our poor little green planet! :-(


Petrol used in car engine useful or harmful?

the carbon dioxide which comes from the burned petrol of cars is definitely harmful if you directly breathe it in, but not really harmful otherwise


Petrol used in a car engine is it useful or harmful?

Used properly where it was intended to be used for gasoline powered engines is useful. Breathing gasoline vapors to get high is harmful not mention stupid.


Is it an useful or harmful reaction when Petrol is used in car engine?

Well petrol is short for petroleum which is Gasoline! so unless your car runs on anything thing else i'd say its usefuL!


Petrol is used in a car engine is it useful and harmful?

Petrol is known also as gasoline. It is useful because it makes the car run. But it is harmful to the environment due to the byproducts of the combustion required to make it run the car. The exhaust of a car that uses gasoline has many poisonous gasses and compounds. Carbon monoxide is one. This gas can kill you easily, even in your own car while you are driving it down the road.


Is it harmful or dangerous if petrol is used in the car?

It is useful!


Petrol is useed in a car engine-useful or harmful?

petrol is the same as gas for one. and two because it has a low combustion point making it easier to ignite. petrol is the same as gas for one. and two because it has a low combustion point making it easier to ignite.