Correct Option
The correct option isCoke
Explanation
Petroleum (crude oil) is a complex mixture of hydrocarbons that is processed through fractional distillation to separate it into useful fractions. Coal is a solid fossil fuel that undergoes destructive distillation to produce specific carbon-rich by-products.
Analysis:
- Diesel: This is a constituent of petroleum obtained during fractional distillation. It is widely used as fuel for heavy motor vehicles.
- Paraffin wax: This is a petroleum by-product used in the manufacturing of candles, ointments, and cosmetics.
- Lubricating oil: This is a fraction of petroleum used to reduce friction in machinery.
- Coke: This is a tough, porous, and black substance obtained by the destructive distillation of coal. It is an almost pure form of carbon used in steel manufacturing and metal extraction. It is not a constituent of petroleum.
Key Takeaway:
Diesel, paraffin wax, and lubricating oil are fractions derived from petroleum, whereas coke is a primary product derived from coal.