Question

petroleum is refined by

Answer 1

Petroleum refining processes are the chemical engineering processes and other facilities used in petroleumrefineries (also referred to as oil refineries) to transform crude oil into useful products such as liquefiedpetroleum gas (LPG), gasoline orpetrol, kerosene, jet fuel, diesel oil and fuel oils.

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Answer 2

Hi
your answer is oil or the process is called oil refineries.
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