
Crude oil is refined and separated, most easily on the basis of boiling point, and is converted into large number of consumer products such as petrol (or gasoline) and kerosene to asphalt and chemical reagents used to make plastics and pharmaceuticals. Moreover, crude oils are refined and separated into mixture, which is further converted to simpler fractions to be further utilized as fuels, lubricants, and even as intermediate feedstock to the petrochemical industries.