Q. Which pollutants are released by coal-based thermal power stations? (MPPSC AE CE 2017 - II)
Answer: NOx, SO2, and SPM
Notes: Coal combustion in thermal power stations releases sulfur dioxide (SO2), nitrogen oxides (NOx), and suspended particulate matter (SPM). These pollutants are emitted due to the chemical properties of coal and the combustion process. Sulfur dioxide results from sulfur content in coal. Nitrogen oxides are formed from nitrogen in air and fuel. Suspended particulate matter includes ash and fine particles released during burning. These emissions contribute to air pollution, acid rain, and respiratory problems.