Fuel for electric generators
Explanation
Petroleum Fractionation and Uses
Crude oil is processed through fractional distillation to yield various products such as petrol, diesel, kerosene, and paraffin wax. Each fraction has distinct physical properties that determine its specific industrial and domestic applications.
- Solvent for dry cleaning is incorrect: Petrol (gasoline) was historically used as a solvent for dry cleaning clothes. Diesel is not suitable for this purpose due to its volatility profile and oily residue.
- Fuel for light automobiles is incorrect: Petrol is the primary fuel for light automobiles such as scooters, motorcycles, and cars. Diesel is typically used for heavy motor vehicles like trucks, buses, and tractors.
- Fuel for electric generators is correct: Diesel is the standard fuel used in electric generators (gensets) and heavy equipment. Its high energy density and efficiency make it suitable for generating electricity and powering heavy machinery.
- Manufacturing of ointments is incorrect: The manufacturing of ointments, candles, and petroleum jelly (Vaseline) utilizes Paraffin wax, which is a heavier fraction of petroleum refining.
Key Takeaway:
Petrol is used for light automobiles and as a dry-cleaning solvent. Diesel is used for heavy motor vehicles and electric generators. Paraffin wax is used for ointments and candles.