What are the main constituents of LPG?

The correct answer is Methane, Butane, Propane.

Key Points

LIQUEFIED PETROLEUM GAS (LPG):

• On liquefaction, petroleum gas changes into a liquid which is called liquefied Petroleum Gas (LPG).
• The main constituent of LPG is butane though it contains smaller amounts of ethane and propane also.
• From above it is clear that, butane is the main constituent of LPG.
• LPG is stored in cylinders. It is mainly used for cooking and hence it is also called cooking gas and the cylinders containing it are called cooking gas cylinders.
• When a valve provided in the cylinder is opened with the help of a regulator; due to a decrease in pressure, LPG changes into a vapour.
• This vapour flows to the burners through a rubber tubing attached to the regulator.

Additional Informatio

Advantages of LPG:

1. It is a high calorific value fuel (50 kJ/g).
2. It burns without smoke and is pollutionless.
3. It is a neat and clean fuel.
4. It is convenient to store.