Question

Domestic cooking gas cylinder contains-
(a) Coal gas
(b) Liquid petroleum gas
(c) Diesel oil
(d) Alcohol

Answer 1

Hint: Like other fossil fuels, it is a non-renewable source of energy. It remains stored at very high pressure in steel or iron cylinders due to which it liquefies.

Complete answer: The domestic cooking gas cylinder contains LPG i.e. Liquid Petroleum Gas. LPG is extracted from crude oil and natural gas. It is composed of hydrocarbons with three or four carbon atoms. Thus, the normal components of LPG are- propane and butane. LPG is a colorless and odorless gas. It is a flammable mixture of hydrocarbons and is used as fuel in cooking gas cylinders.
The pressure inside the cylinder containing LPG depends upon the constituent i.e. commercial butane or commercial propane) and also on the atmospheric temperature. LPG is also being used as a good substitute for chlorofluorocarbons as a refrigerant and aerosol propellant so as to reduce the greenhouse effect and prevent global warming.

Additional Information: Renewable resources refers to the natural resources that get replenished after consumption. They can be replaced by either through natural reproduction or other recurring processes in a limited time period. Renewable resources include- biomass energy like ethanol, hydropower, geothermal power, wind energy, and solar energy.

So, the correct answer is ‘Liquid petroleum gas'.

Note: LPG burns more cleanly than many higher molecular weight hydrocarbons because it releases very few particulates. LPG burns easily in air and has an energy content similar to that of petrol and twice the heat energy of natural gas. This makes LPG an excellent fuel for heating, cooking, and much other automotive use.