What are the main constituents of LPG?

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Bihar CET B.Ed 2022 Official Paper
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  1. Methane, Hexane, Ethane
  2. Methane, Butane, Propane
  3. Ethane, Pentane, Hexane
  4. Ethane, Methane, Pentane

Answer (Detailed Solution Below)

Option 2 : Methane, Butane, Propane
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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.

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