Question

explain tropospheric polution

Answer 1

Tropospheric pollution arises due to the presence of undesirable substances in the lowest layer of the atmosphere.

Oxides of sulphur, nitrogen, carbon, and hydrocarbons are the major gaseous pollutants.

Oxides of sulphur (SO2 and SO3) and nitrogen (NO2, NO) are produced as a result of burning of fossil fuels (coal, automobile fuel). These oxides react with water in the presence of atmospheric oxygen to form nitric acid (HNO3) and sulphuric acid (H2SO4), which leads to the formation of 'Acid rain'.

Answer 2

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Tropospheric pollution is caused by gaseous air pollutants as well as particulate pollutants. Among the gaseous air pollutants, oxides of sulphur (SOx), oxides of nitrogen (NOx) and carbon monoxide play an important role towards pollution.