MCQ Detailed View

Liquid fuels are substances that are in liquid form at room temperature and are used to provide energy through combustion. Common examples include petrol, kerosene, and paraffin oil.

Petrol, also called gasoline, is a light fuel mainly used in cars and motorcycles. It ignites easily and burns quickly in spark ignition engines.

Kerosene is slightly heavier than petrol and is used in heaters, lamps, and some jet engines. It burns steadily and provides a controlled source of energy.

Paraffin oil, sometimes used in lamps or small stoves, is also a liquid fuel. It is heavier than petrol and kerosene but still flows easily and burns when ignited.

All these fuels release energy when burned, which can be used for transportation, heating, and industrial purposes. They are all classified as hydrocarbon fuels because they are mainly made of hydrogen and carbon atoms.

In short, all three options — petrol, kerosene, and paraffin oil — are liquid fuels. They are important in everyday life and are studied in Chemistry to understand combustion, energy, and fuel properties.

So the correct answer is All of above, as all listed fuels are in liquid form.