Question

Major constituent of LPG is:
(A)Ethene
(B)Butane
(C)Propane
(D)pentane

Answer 1

Hint: LPG gas is filled with flammable gases. It is used as a fuel and used in cooking and petroleum. Burning LPG releases carbon dioxide, a greenhouse gas. The reaction also produces carbon monoxide.

Complete step by step solution:
Liquified petroleum gas (LPG) is a flammable mixture of hydrocarbon gases used as fuel in heating appliances, cooking equipment and vehicles. It is increasingly used as an aerosol propellant and a refrigerant, replacing chlorofluorocarbons in an effort to reduce damage to the ozone layer. Like all fossil fuels, It is a non-renewable source of energy. It is extracted from crude oil and natural gas. LPG is composed of hydrocarbons containing three or four carbon atoms. The normal components of LPG thus, are propane (${{C}_{3}}{{H}_{8}}$) and butane (${{C}_{4}}{{H}_{10}}$). Small concentrations of other hydrocarbons may also be present.LPG burns readily in air and has an energy content similar to petrol and twice the heat energy of natural gas.
Normally the gas is stored in liquid form under pressure in a steel container, cylinder or tank. The pressure inside the container will depend on the type of LPG and the outside temperature. LPG burns more cleanly than higher molecular weight hydrocarbons because it releases fewer particles.

Therefore, the correct answers are the (B), (C) option.

Note: LPG is just propane in the US and Australia. In New Zealand, LPG is a mix of Propane and Butane. LPG can be converted into alkylate which is a premium gasoline blending stock because it has exceptional anti-knock properties and gives clean burning.