Question

Name and briefly explain four ways by which pollution of air caused by humans is minimised.

Answer 1

Pollution of air by humans can be minimised in the following manner :

1. In the thermal power plants, steel plants etc., electric precipitators should be used to reduce the smoke and ash entering the air.
2. Efficient internal combustion engines should be used in vehicles.
3. Improved chulha or stoves should be used to minimise the production of smoke and carbon-monoxide.
4. We must grow more trees as they absorb harmful gases.