SSC MTS EXAM

Detailed explanation-1: -mobile sources – such as 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.

Detailed explanation-2: -Geographic features such as mountain ranges, coastlines, and land modified by people can cause air pollutants to concentrate in, or disperse from, an area. However, the types and amounts of pollutants entering the air have a much larger impact on air quality.