Question

5. What are fossil fuels ? How are they formed? Why should they not be wasted
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Answer 1

Fossil fuels :-

Exhaustible natural resources like coal, petroleum and natural gas were formed from the dead remains of living organism (fossils). So, these are called fossil fuels. Coal and petroleum are very important natural resources and play a vital role in modem society. They are found in the earth's crust.

These fossil fuels are all Hydrocarbons, they are compounds formed from only two elements, Carbon and Hydrogen. Fossil fuels are used to produce energy; in the home they are burned to produce heat, in large power stations they are used to produce electricity and they are also used to power engines.

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Answer 2

$\tiny\color{purple}{ \colorbox{purple}{\colorbox{white} {A fossil fuel is a fuel formed by the decomposition of buried dead organisms under the pressure and heat in the earth's crust. ... Fossil fuel is continuously formed by natural process. Since it is derived from fossilised organic remains, it contains a high amount of carbon.}}}$