Q28 of 269 Page 131

The product of petroleum used to drive heavy vehicles like truck is:

Diesel fuel in general is any liquid fuel used in diesel engines, whose fuel ignition takes place, without any spark, as a result of compression of the inlet air mixture and then injection of fuel.

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26

The natural gas consist mainly of:

 27

Which of the following is not produced by the burning of fossils fuels?

 29

The aviation fuel which is used in the engines of jet aeroplanes is:

 30

The ultimate sources of energy stored in fossil fuels is: