Which substance is used for road surfacing these days?
These days bitumen is used for road surfacing in place of coal tar.
Why is coke seldom used as a fuel?
Coke seldom used as a household fuel as it is expensive, it is also used in the chemical industry in metal extraction.
What are petrochemicals?
The useful substances formed from natural gas and petroleum are called petrochemicals.
Name two fractions of petroleum which are used as fuel.
(i) Petrol
(ii) Diesel