The correct option is (c).
Explanation
Petroleum is a complex mixture of hydrocarbons that is separated into various useful fractions through the process of fractional distillation. Each constituent has specific properties and applications.
- Statement 1 is Incorrect: Kerosene is primarily used as a fuel for stoves, lamps, and jet aircrafts. It is Diesel that is used as a fuel for heavy motor vehicles and electric generators.
- Statement 2 is Correct: Lubricating oil is a heavy fraction of petroleum used specifically for lubrication to reduce friction and wear between moving mechanical parts.
- Statement 3 is Correct: Paraffin wax is a solid constituent obtained from petroleum refining. It is widely used in the manufacturing of ointments, candles, Vaseline, and grease.
Key Takeaway: The refining of petroleum yields specific fractions for distinct uses: Diesel drives heavy machinery and vehicles, whereas Kerosene serves domestic and aviation fuel needs.