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The pollutant gas generated in high quantity by the thermal power plants is:
1. SO2
2. CO
3. NH3
4. Fly ash

1 Answer

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Best answer
Correct Answer - Option 1 : SO2

The correct answer is SO2.

  • There are several pollutants emitted into the air from a coal power plant.
  • These include Sulphur Dioxide (SO2), Carbon Monoxide (CO), Oxides of Nitrogen (NOx), and Ozone (O).
    • Suspended Particulate Matter (SPM), Lead, and Non-Methane Hydrocarbons are also released.
  • SOx (Oxides of Sulphur) is the combination of sulfur in the fuel and the oxygen from the air.
    • Sulphur Dioxide (SO2) is a common pollutant from coal power plants.
    • Sometimes, due to excess oxygen, SO2 is also formed, which mixes with the water in the atmosphere, causing acid rain.
    • There are several health impacts for this pollutant like Affects respiratory system and lung functions, causes asthma and chronic bronchitis, causes eye irritation, causes cardiac disease, etc.
  • SPM from coal power plants is mainly soot, smoke, and fine dust particles and these cause asthma and respiratory illness.

  • NOx is formed during the combustion of the nitrogen present in the fuel and the oxygen present in the air.
    • The formation of NOx is greater with an increase in the combustion temperature.
    • There are several health impacts for this pollutant like causes asthma, causes chronic obstructive pulmonary disease, stunts lung growth, causes cardiac disease, etc.

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