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Question

The first step in refining petroleum is:
  1. fractional distillation
  2. liquation
  3. concentration
  4. filtration

A
fractional distillation
B
liquation
C
concentration
D
filtration
Solution
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The very first step in the refining of petroleum oil is Fractional distillation i.e, the fractionation of crude oil in atmospheric vacuum distillation towers.

The first process in a petroleum refinery is known as distillation. In this process, crude oil is heated and filled into a distillation column.

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