Which of the following are some important pollutants released by the steel industry in India?

1. Oxides of sulphur
2. Oxides of nitrogen
3. Carbon monoxide
4. Carbon dioxide

Select the correct answer using the code given below.

1. 1, 3 and 4 only
2. 2 and 3 only
3. 1 and 4 only
4. 1, 2, 3 and 4

Explanation

All are correct

• The steel industry is a major source of air pollution due to processes like coke making, blast furnace operations, and fuel combustion. These activities release multiple pollutants, including oxides of sulphur (SOx), oxides of nitrogen (NOx), carbon monoxide (CO) from incomplete combustion, and carbon dioxide (CO₂) as a greenhouse gas. Thus, all the given pollutants are released by the steel industry.

Answer: (d) 1, 2, 3 and 4; Difficulty Level: Easy