Which is not a source of air pollution ?

Options

A. Automobiles
B. Industries
C. Solid waste
D. Dust particles

Answer

C

Explanation

There are four main types of air pollution sources :
Mobile sources such as automobiles i.e. cars, buses, planes, trucks and trains.
Stationary Sources Such as power plants, oil refineries, industrial facilities and factories.
Area Sources Such as agricultural areas, cities and wood burning fireplaces.
Natural Sources Such as wind blown dust, wildfires and volcanoes