Question

Acid rain is caused by or recent reports of acid rain in some industrial cities are due to the effect of atmospheric pollution by

• A. Excessive release of $C{O}_2$ by burning of fuels like wood and charcoal, cutting of forests and increased animal population
• B. Excessive release of $N{O}_2$ and $S{O}_2$ in the atmosphere by burning of fossil fuel
• C. Excessive release of $N{H}_3$ by industrial plants and coal gas
• D. Excessive release of CO in the atmosphere by incomplete combustion of coke, charcoal and other carbonaceous fuel in the of oxygen

Answer 1

The correct option is B Excessive release of $N{O}_2$ and $S{O}_2$ in the atmosphere by burning of fossil fuel

When $S{O}_2$ pollution in the air is much higher. Sometimes, $S{O}_2$ mixes in the air with small particles of metals near the factories and gets oxidised into sulphur trioxide $S{O}_3$. These gases are harmful and they react with water to form sulphuric acid ($H_2$$S{O}_4$) or sulphurous acid ($H_2$$S{O}_3$) and come down to earth with rainwater; it is called acid rain or acid precipitation.