Question

Which of the following techniques is used in petroleum refining?

• A. Evaporation
• B. Simple distillation
• C. Fractional distillation
• D. Filtration

Answer 1

The correct option is C

Fractional distillation

Petroleum is a mixture of various constituents such as petroleum gas, petrol, diesel, kerosene, lubricating oil, paraffin wax, etc. The process of separation of various constituents or fractions of petroleum is done by fractional distillation in fractionating columns. The process of heating a mixture of liquids having different boiling points and then separating them by cooling is called fractional distillation.