Which of the following are some important pollutants released by the steel industry in India?
- Oxides of sulphur
- Oxides of nitrogen
- Carbon monoxide
- Carbon dioxide
Select the correct answer using the code given below.
Detailed Explanation:
✅ Statement 1 – Correct: Steel industry uses coal and coke containing sulphur; combustion and sintering processes release oxides of sulphur (SOx).
✅ Statement 2 – Correct: High-temperature operations in blast furnaces cause atmospheric nitrogen to react with oxygen, forming oxides of nitrogen (NOx).
✅ Statement 3 – Correct: Carbon monoxide (CO) is generated during reduction of iron ore and through incomplete combustion of carbon-based fuels.
✅ Statement 4 – Correct: Carbon dioxide (CO2) is released from chemical reduction of iron ore (coke reacting with ore) and combustion of fossil fuels.
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