The process of separating the various constituents of petroleum is known as____________.
Petroleum
Refining of petroleum
Fill in the banks.
(a) Fossil fuels are ________, ________ and _________.
(b) Process of separation of different constituents from petroleum is called _________.
(c) Least polluting fuel for vehicles is __________.
The process of separating the various constituents/fractions of petroleum is known as ___