Q. Consider the following:
1.Coal-fired thermal power plants
2.Petroleum refining industries
3.Metal smelting of sulphur-bearing ores
4.Volcanic eruptions
5.Biological decomposition of organic matter in wetlands
Which of the above are sources of sulphur dioxide (SO₂) emissions?
Answer: D
Notes:
Explanation: Sulphur dioxide (SO₂) is released from both anthropogenic and natural sources. Major anthropogenic sources include coal combustion in thermal power plants, petroleum refining, and metal smelting. Natural emissions arise from volcanic activity and the decomposition of organic matter in wetlands, which contribute to background atmospheric SO₂ concentrations.
Source- DTE
