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Question

Which substance is formed by the carbonization of dead vegetation?

A
Coke
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B
Coal
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C
Coal tar
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D
Coal gas
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Solution

The correct option is B Coal
Coal was formed by the bacterial decomposition of ancient vegetable matter buried under successive layers of the Earth. Under the action of high temperature and pressure, and in absence of air, the decayed vegetable matter converted into coal through a series of process. This process is known as carbonization. Coke, coal gas and coal tar are prepared by distillation of coal.

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