Q. Which of the following gases are commonly released during the combustion of coal in thermal power plants?
1.Carbon dioxide
2.Oxides of nitrogen
3.Oxides of sulphur
Select the correct answer using the code given below:
Answer: D
Notes:
Explanation:
- Carbon dioxide (CO₂): Produced in large quantities as coal is carbon-rich and undergoes complete combustion.
- Oxides of Nitrogen (NOx): High combustion temperatures in thermal power plants lead to the formation of nitrogen oxides.
- Oxides of Sulphur (SO₂, SO₃): Coal contains sulfur impurities, which produce sulfur oxides when burned.
Source: Environment (Factly Forum IAS)
