Question

by which method refining of petroleum is done

Answer 1

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Refining of petroleum in don't through the method of fractional distillation.

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Answer 2

Petroleum refining processes are the chemical engineering processes and other facilities used in petroleum refineries (also referred to as oil refineries) to transform crude oil into useful products such as liquefied petroleum gas (LPG), gasoline or petrol, kerosene, jet fuel, diesel oil and fuel oils.
It is refined by fractional distillation

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