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Q2 (IAS/2011) Environment & Ecology › Pollution & Conservation › Energy and emissions Answer Verified

Consider the following: 1. Carbon dioxide 2. Oxides of Nitrogen 3. Oxides of Sulphur Which of the above is/ are the emission/ emissions from coal combustio nat thermal power plants ?

Result
Your answer: —  Â·  Correct: D
Explanation

Coal combustion at thermal power plants is a significant source of multiple atmospheric emissions. Carbon dioxide (CO2) is a primary byproduct of burning fossil fuels, with coal combustion accounting for approximately 35 to 40 percent of global CO2 emissions [2]. Oxides of Nitrogen (NOx) are formed during the combustion process from nitrogen present in the fuel and the surrounding air, particularly at high temperatures [6]. Oxides of Sulphur (SOx), primarily sulphur dioxide (SO2), are produced when the sulphur content in coal reacts with oxygen during combustion [4]. These emissions are major contributors to environmental issues such as acid rain and smog [4]. Thermal power plants are explicitly identified as major sources for all three pollutants—CO2, NOx, and SOx—alongside other materials like fly ash and particulate matter [6].

Sources

  1. [2] Environment and Ecology, Majid Hussain (Access publishing 3rd ed.) > Chapter 9: Distribution of World Natural Resources > coal as a Resource > p. 9
  2. [6] https://pmc.ncbi.nlm.nih.gov/articles/PMC9075710/
  3. [1] Environment, Shankar IAS Acedemy .(ed 10th) > Chapter 5: Environmental Pollution > Fly ash notification zozr > p. 67
  4. [4] https://www.epa.gov/so2-pollution/sulfur-dioxide-basics
  5. [3] Environment, Shankar IAS Acedemy .(ed 10th) > Chapter 5: Environmental Pollution > Sulphurdioxide (SOz) > p. 64
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