What is LP gas primarily composed of?

LP gas, or liquefied petroleum gas, is primarily composed of propane and butane. This composition allows LP gas to be stored as a liquid under pressure, which makes it highly efficient and portable for various applications, including heating, cooking, and fueling vehicles.

Propane is a three-carbon alkane, while butane is a four-carbon alkane. Both of these gases can be easily compressed into a liquid form, which makes them ideal for storage and transportation. When the pressure is released, LP gas vaporizes and can be used as fuel.

Other options present different hydrocarbons that do not align with the definition of LP gas. Methane and ethane are primarily associated with natural gas; butene and pentane are not typically found in LP gas; and ethylene and propylene are more related to industrial applications in the chemical industry rather than fuel for heating or cooking. Thus, the correct choice of propane and butane accurately reflects the primary components of LP gas.