Question

Question 4 (b)
The process of separation of different constituents of petroleum is called ______.

Answer 1

Petroleum is a dark oily liquid with an unpleasant odour. It is a mixture of various constituents such as petroleum gas, petrol, diesel, lubricating oil, paraffin wax, etc. The process of separating the various constituents/fractions of petroleum is known as refining. It is carried out in a petroleum refinery.