Question

Petroleum is a mixture of ______.
A) Petrol
B) Diesel
C) Petroleum gas
D) All of the above

Answer 1

Hint: We know that petroleum is a naturally occurring fluid which is extracted from the surface of the earth. Petroleum is the source of many fuels that are being used in daily life.

Complete step-by-step answer:
We know that petroleum is a mixture of naturally occurring hydrocarbons that have various molecular weights and different organic compounds. Petroleum is formed from compressed organic matter. Petroleum is a fossil fuel which is formed by the degradation of many compounds and organisms for over million years. Thus, petroleum is a dark coloured oily liquid which is obtained from beneath the rocks.
Petroleum is also known as rock oil or black gold.

The refining of petroleum gives various products such as petroleum gas, petrol, diesel, kerosene, paraffin wax, lubricating oil, etc. We know that the technique used in purification of liquids or for the separation of liquid components from a mixture is known as fractional distillation. In the process of fractional distillation, the liquid is heated to its boiling point and converted to vapour. The vapours are again condensed to liquid. The fractional distillation process is generally used for the refining of crude petroleum. Thus, petroleum is a mixture of petrol, diesel, petroleum gas.

Thus, the correct answer is option (D) all of the above.

Note: The commonly used product of petroleum is petrol. Petrol is also known as gasoline or gasoline. Petrol is a refined product of petroleum. Petrol is a mixture of hydrocarbons, additives and blending agents. The composition of petrol depends on various factors like the crude oil used, availability of refinery process, product specifications, etc.