In the context of WHO Air Quality Guidelines, consider the following statements : 1. The 24-hour mean of PM 2.5 should not exceed 15 ng/m3 and annual mean of PM2 5 should not exceed 5 (ig/m 3. 2. In a year, the highest levels of ozone pollution occur duri

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Q: 44 (IAS/2022)
In the context of WHO Air Quality Guidelines, consider the following statements :
1. The 24-hour mean of PM
2.5 should not exceed 15 ng/m3 and annual mean of PM2 5 should not exceed 5 (ig/m
3.
2. In a year, the highest levels of ozone pollution occur during the periods of inclement weather.
3. can penetrate the lung barrier and enter the bloodstream.
4. Excessive ozone in the air can trigger asthma.
Which of the statements given above are correct ?

question_subject: 

Science

question_exam: 

IAS

stats: 

0,74,139,48,74,71,20

keywords: 

{'air quality guidelines': [0, 0, 0, 1], 'excessive ozone': [0, 0, 0, 1], 'ozone pollution': [0, 0, 0, 1], 'asthma': [1, 0, 0, 0], 'air': [1, 0, 0, 0], 'inclement weather': [0, 0, 0, 1], 'annual mean': [0, 0, 0, 1], 'hour mean': [0, 0, 0, 1], 'highest levels': [0, 0, 0, 1], 'pm2': [0, 0, 0, 1]}
https://en.wikipedia.org/wiki/Air_quality_index#:~:text=An%20air%20quali...(AQI,it%20is%20forecast%20to%20become.

 

Preparing for Future Exams: Learning from the Analysis of Past Questions

Topics:

  1. Air pollution
  2. Air quality guidelines
  3. Health impacts of air pollution
  4. Particulate matter (PM)
  5. Ozone pollution

Sources:

  1. World Health Organization (WHO) Air Quality Guidelines
  2. Central Pollution Control Board (CPCB), India: http://www.cpcb.nic.in/
  3. United States Environmental Protection Agency (USEPA): https://www.epa.gov/air-quality-management-process

NCERT and reference book chapters:

  1. NCERT Class 12 Biology, Chapter 16: Environmental Issues
  2. NCERT Class 11 Chemistry, Chapter 14: Environmental Chemistry
  3. Reference book: "Air Pollution" by Jeremy Colls and Routledge

Related concepts:

  1. Criteria pollutants
  2. Air quality indices
  3. Health effects of air pollution
  4. Exposure assessment
  5. Risk assessment
  6. Environmental standards and regulations
  7. Atmospheric chemistry
  8. Climate change and air quality
  9. Urban air pollution
  10. Indoor air pollution.