Question

In cities like Bombay and Calcultta, the major air pollutants is/are:

• A. ozone
• B. carbon monoxide and oxides of sulphur
• C. hydrocarbons and not air
• D. algal spores and marsh gas

Answer 1

The correct option is B carbon monoxide and oxides of sulphur

Causes of air pollution in big cities are -
1. Burning of fossil fuels: Sulfur dioxide emitted from the combustion of fossil fuels like coal, petroleum and other factory combustibles is one the major cause of air pollution. carbon monoxide caused by improper or incomplete combustion and generally emitted from vehicles is another major pollutant along with nitrogen oxides, that is produced from both natural and man made processes.
2. Exhaust from factories and industries: Manufacturing industries release large amount of carbon monoxide, hydrocarbons, organic compounds, and chemicals into the air thereby depleting the quality of air. Manufacturing industries can be found at every corner of the earth and there is no area that has not been affected by it.