It is used as a fuel for stoves, lamps, and jet aircraft.
Explanation
Kerosene is a combustible hydrocarbon liquid obtained from the fractional distillation of petroleum. It serves as a critical fuel source for various domestic and industrial applications.Option Analysis:
- It is used as a fuel for heavy motor vehicles. is incorrect: Heavy motor vehicles, such as trucks and buses, typically use diesel as fuel. Diesel engines are designed for compression ignition and offer higher torque and efficiency for heavy loads compared to kerosene.
- It is used for metalling roads. is incorrect: The petroleum product used for metalling (surfacing) roads is Bitumen (also known as asphalt), not kerosene.
- It is used as a fuel for stoves, lamps, and jet aircraft. is correct: Kerosene is widely used as a fuel for domestic appliances like pressure stoves and lamps (lanterns). Furthermore, highly refined kerosene is the primary component of jet fuel (such as Jet A-1) used in aviation gas turbine engines.
- It is used in the manufacture of candles and ointments. is incorrect: Paraffin wax, a solid residue from petroleum distillation, is used in the manufacture of candles, ointments, and cosmetics. Kerosene is a liquid fraction.
Key Takeaway: Kerosene is a specific petroleum fraction primarily utilized for domestic heating and lighting, as well as aviation fuel for jet aircraft.