Question

Acid rains are produced by excess release of

• A. release of carbon monoxide by incomplete combustion
• B. formation of CO2 by combustion and animal respiration
• C. Production of NH3 by industry and coal gas
• D. NO2 and SO2 form burning

Answer 1

The correct option is D NO2 and SO2 form burning

Acid rain describes any form of precipitation with high levels of nitric and sulphuric acids. When humans burn fossil fuels, sulphur dioxide and nitrogen oxides get released into the atmosphere. These gases rise very high into the atmosphere, react with water, oxygen and other substances to form mild solutions of sulphuric and nitric acid. These mix with rainwater and fall down to the earth as acid rain. Acid rain is caused by large scale emission of nitrogen oxides, sulphur dioxide and other pollutants from thermal power plants, industries and automobiles.