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On burning of coal, thermal power station mainly produces:-
1. Carbon dioxide
2. Sulphur dioxide
3. Fly ash
4. All of these

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Correct Answer - Option 4 : All of these

Burning of coal:

  • Coal is a fuel source that is relatively inexpensive to produce and convert to useful energy.
  • Coal-fired power plants are linked with asthmacancerheart and lung ailmentsneurological problemsacid rainglobal warming, and other severe environmental and public health impacts.
  • Sulfur dioxide causes a range of harmful effects on the lungs, wheezing, shortness of breath, etc.
  • Sulfur dioxide is widely used in the food and drinks industries for its properties as a preservative and antioxidant.
  • Emissions from burning coal:
    • ​Fly ash and bottom ash, which are residues created when power plants burn coal.
    • Sulfur dioxide (SO2), which contributes to acid rain and respiratory illnesses.
    • Mercury and other heavy metals, which have been linked to both neurological and developmental damage in humans and other animals.
    • Nitrogen oxides (NOx), which contribute to smog and respiratory illnesses.
    • Carbon dioxide (CO2), which is the primary greenhouse gas produced from burning fossil fuels.
    • Particulates, which contribute to smoghaze, and respiratory illnesses, and lung disease.

  •  Coal and global warming:
    • ​Global warming is driven by emissions of heat-trapping gases, primarily from human activities, that rise into the atmosphere and act like a blanket, warming the earth’s surface.
    • Carbon dioxide (CO2) emissions from combusting fossil fuels are the main driver of global warming. CO2 is also the main byproduct of coal combustion.
    • Methane (CH4) often occurs in the same areas that coal is formed, and is released during mining activities.

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