Prelims • Paper 1 (GS) • 2022 • Q.44
Air Pollution and Health
In the context of WHO Air Quality Guidelines, consider the following statements :
1
The 24-hour mean of PM2.5 should not exceed 15 µg/m3 and annual mean of PM2.5 should not exceed 5 µg/m3.
2
In a year, the highest levels of ozone pollution occur during the periods of inclement weather.
3
PM10 can penetrate the lung barrier and enter the bloodstream.
4
Excessive ozone in the air can trigger asthma.
Syllabus Connection
General issues on Environmental ecology, Bio-diversity and Climate Change - that do not require subject specialization. (Prelims)
NCERT Connection
Ch.12: Geographical Perspective on Selected Issues and Problems
Geography • Class 12 • Class 12 Indian Human Geography