Question

what is the difference between refining of petroleum petroleum and fractional distillation of petroleum ?

Answer 1

refining petroleum is a part of fractional distillation of petroleum

Answer 2

refining of petroleum is to refine petroleum after it is prepared.
fractional distillation of petroleum is the process to prepare petroleum.
actually, the fractional distillation of petroleum contains the part named as refining petroleum in which pure petroleum is prepared.
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