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Question
Explain the following.
Petrol, diesel, and coal are fossil fuels.
Solution
- Fossil fuels are formed from plants, animals and other organisms that have been buried under the ground millions of years ago.
- Residues buried in the Earth's interior are weathered by temperature and crustal pressure to form coal, mineral oil (petrol, diesel) and natural gas.
- As these substances release energy after combustion, they are used as fuel.
- Therefore, petrol, diesel, coal are fossil fuels.
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