Petrol, also known as gasoline in some regions, is a flammable liquid fuel primarily used as a source of energy in internal combustion engines. It is derived from crude oil through the refining process. Petrol is a complex mixture of hydrocarbons, typically consisting of molecules with 8 to 12 carbon atoms.

Petrol is most commonly used as a fuel for automobiles, motorcycles, and other vehicles with spark-ignition engines. It is a volatile fuel that vaporizes easily and burns readily in the presence of air and a spark, generating the energy necessary for the engine to operate.

The term “petrol” is widely used in countries such as the United Kingdom, Australia, and India, while “gasoline” is more commonly used in the United States and Canada. Despite the difference in terminology, petrol and gasoline essentially refer to the same fuel.

Petrol’s energy content is measured in terms of its octane rating, which indicates its resistance to knocking or pre-ignition in an engine. Higher-octane petrol is typically used in high-performance engines or those designed for increased power, while lower-octane petrol is suitable for most standard passenger vehicles.

In addition to its use as a transportation fuel, petrol has other applications. It is used as a solvent in various industries, including the manufacturing of paints, varnishes, and cleaning agents. Petrol is also used as a fuel for small engines, such as lawnmowers, chainsaws, and generators.

It is important to note that petrol is a non-renewable fossil fuel, and its combustion contributes to air pollution and greenhouse gas emissions. As a result, there has been a growing emphasis on developing alternative fuels and transitioning to electric vehicles to reduce the environmental impact associated with petrol consumption.