Which of the following are some important pollutants released by steel industry in India?
1. Oxides of sulphur
2. Oxide of nitrogen
3. Carbon monoxide
4. Carbon dioxide
Select the correct answer using the code given below:
Which of the following are some important pollutants released by steel industry in India?
1. Oxides of sulphur
2. Oxide of nitrogen
3. Carbon monoxide
4. Carbon dioxide
Select the correct answer using the code given below:
Answer:
(d)
Non-traditional
Statement 1 (Oxides of Sulphur) is correct: The steel industry burns coal and coke, both of which contain sulphur. During smelting and combustion, Sulphur dioxide (SO₂) is released, a major air pollutant causing acid rain. Statement 2 (Oxides of Nitrogen) is correct: High-temperature combustion in blast furnaces and power units releases NO and NO₂ (NOx) gases, which contribute to smog and respiratory issues. Statement 3 (Carbon Monoxide) is correct: Incomplete combustion of coke in blast furnaces produces large amounts of CO, which is both a toxic gas and a greenhouse contributor. Statement 4 (Carbon dioxide) is correct: As a fossil-fuel-intensive industry, the steel sector is a major emitter of CO₂, making it one of the largest industrial contributors to global warming.