2014
Q.
Set A
Environment & Ecology
Pollution
Which of the following are some important pollutants released by steel industry in India?
- Oxides of sulphur
- Oxides of nitrogen
- Carbon monoxide
- Carbon dioxide
Smart Elimination
The steel industry burns huge amounts of coal and processes mineral ores. This heavy industrial activity releases almost all major pollutants, including Sulfur and Nitrogen oxides. It is safe to assume all options are correct.
Answer Key & Explanation
Answer: DThe correct answer is Option D.
Explanation: The Steel Industry involves the combustion of coal (coke) and iron ore processing, which releases:
- Oxides of Sulphur (SOx): From sulphur content in coal/ore.
- Oxides of Nitrogen (NOx): High-temperature combustion.
- Carbon Monoxide (CO): Incomplete combustion in blast furnaces.
- Carbon Dioxide (CO2): Major greenhouse gas from burning coal.
All four are pollutants associated with the steel industry.
Value Addition
- Green Steel: New initiatives aim to use Green Hydrogen instead of coal to reduce carbon footprint.
- Fly Ash: Also generated by captive power plants in steel industries.
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Difficulty Assessment
easy
Foundational question based on core concepts.