Manufacturing of ointments and candles
Explanation
Paraffin wax is a white or colourless soft solid derivable from petroleum, coal, or oil shale. It consists of a mixture of hydrocarbon molecules containing between twenty and forty carbon atoms. It is obtained as a residue during the fractional distillation of crude oil.
Option Analysis
- Motor fuel is incorrect: Motor fuel typically refers to lighter liquid fractions of petroleum such as petrol (gasoline) or diesel, rather than the solid waxy residue.
- Manufacturing of paints is incorrect: While petroleum-derived solvents are used in paints, paraffin wax itself is not a primary ingredient in the manufacturing of standard paints.
- Manufacturing of ointments and candles is correct: Paraffin wax is extensively used in the manufacturing of candles due to its low melting point and clean-burning properties. It is also used in the pharmaceutical and cosmetic industries to make ointments, creams, and petroleum jelly (Vaseline) because it is chemically inert and helps form a protective barrier on the skin.
- Fuel for electric generators is incorrect: Fuel for electric generators is usually a liquid fuel like diesel or kerosene, not solid wax.
Key Takeaway: Paraffin wax is a petroleum by-product primarily utilized in the production of candles, ointments, wax paper, and polishes due to its water-resistant and chemically inert nature.