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UPSC Prelims 2024GS1Environment & EcologyAir Pollution (Sulphur Dioxide)

Q30. According to the Environmental Protection Agency (EPA), which one of the following is the largest source of sulphur dioxide emissions ?

A. Locomotives using fossil fuels
B. Ships using fossil fuels
C. Extraction of metals from ores
D. Power plants using fossil fuels✓ Correct

Detailed Solution

✓ Correct Answer: Option D
According to the Environmental Protection Agency (EPA), the largest source of sulfur dioxide (SO2) emissions into the atmosphere is the burning of fossil fuels, particularly coal, by power plants and other industrial facilities. While other sources like ships, locomotives, and metal extraction processes also contribute to SO2 emissions, their collective impact is significantly less than that of fossil fuel-fired power generation.

This question assesses knowledge of major air pollutants and their primary sources, a key topic in environmental studies and current affairs.

Current Affairs Link

Discussions around India's SO2 emissions and the implementation of emission norms for coal-based thermal power plants have been prominent in environmental news.

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