The correct answer is (c). Ethane, Propane and Butane are the main constituents of Liquid Petroleum Gas (LPG).
LPG is a mixture of hydrocarbon gases that are liquefied under pressure. It is a byproduct of natural gas processing and oil refining. LPG is used for cooking, heating, and as a fuel for vehicles.
Ethane is a colorless, odorless gas that is lighter than air. It is the second most abundant hydrocarbon in natural gas. Ethane is used as a fuel for vehicles and as a feedstock for the production of ethylene.
Propane is a colorless, odorless gas that is heavier than air. It is the third most abundant hydrocarbon in natural gas. Propane is used as a fuel for vehicles, as a heating fuel, and as a feedstock for the production of propylene.
Butane is a colorless, odorless gas that is heavier than air. It is the fourth most abundant hydrocarbon in natural gas. Butane is used as a fuel for vehicles, as a heating fuel, and as a feedstock for the production of butylene.
Methane, Pentane and Hexane are not the main constituents of LPG. Methane is the simplest hydrocarbon and is the main component of natural gas. Pentane and Hexane are heavier hydrocarbons that are used as solvents and as feedstocks for the production of gasoline.