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Coal and petroleum

Coal - Its Formation and Characteristics

Most of us have seen coal being used in some way or the other. It is also used in traditional fireplaces. In earlier times, coal was used to run rail engines. It is hard, stone-like blackish substance that releases heat and smoke on burning.

The story of coal: Do you know how coal is formed?

Hence, coal was formed by decomposition of dead remains of plants when they got buried in the land owing to the high temperature and pressure conditions present there.

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