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Divesh Asked :

10-07-2021 Science

Q. What is the first step in the refining of petroleum?

A. Distillation
B. Cooling
C. Drilling
D. Cracking

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Dapzoi Verified
Commented on 2021-07-15 14:50:52 (IST)
Answer - A. Distillation

Explanation - 
The first step in the refining of petroleum is distillation i.e,  the fractionation of crude oil in atmospheric and vacuum distillation towers.