______ is a slow process in which organic matter is converted into coal.
A
Burning
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B
Carbonisation
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C
Fractional distillation
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D
Destructive distillation
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Solution
The correct option is B Carbonisation The organic matter gets buried deep inside the earth over millions of years. It is gradually transformed to carbon rich compound under high pressure and temperature. The slow process of converting dead organic matter into coal is called carbonisation.