Coal is a tough, porous and black substance. It is almost pure form of carbon. It is formed by the dead remains of the living organisms.

Uses of coal:

(i) Coal is used as fuel to cook food.

(ii) It is used to run trains, as it is burnt to generate steam in engine.

(iii) It is used in thermal power plants to produce electricity.

(iv) Coal is also used as fuel in different industries.