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With reference to the World Health Organization (WHO) air pollution standards, consider the following statements:
1. The upper limit of PM10, or particulate matter of size exceeding 10 microgram, is 20 microgram and has now been revised to 15.
2. The new guidelines meant that among 100 global cities, Delhi’s annual PM2.5 trends in 2020 was 16.8 times more than the WHO’s revised air quality guidelines.
Which of the statements given above is/are correct?
  • a)
    1 only
  • b)
    2 only
  • c)
    Both 1 and 2
  • d)
    Neither 1 nor 2
Correct answer is option 'C'. Can you explain this answer?
Verified Answer
With reference to the World Health Organization (WHO) air pollution st...
The World Health Organization (WHO), in its first-ever update since 2005, has tightened global air pollution standards in recognition of the emerging science that the impact of air pollution on health is much more serious than earlier envisaged.
  • The upper limit of annual PM2.5 as per the 2005 standards, which is what countries now follow, is 10 microgram per cubic metre. That has now been revised to five microgram per cubic metre.
  • The 24-hour ceiling used to be 25 microgram but has now dropped to 15.
  • The upper limit of PM10, or particulate matter of size exceeding 10 microgram, is 20 microgram and has now been revised to 15, whereas the 24-hour value has been revised from 50 to 45 microgram.
  • The new guidelines meant that among 100 global cities, Delhi’s annual PM2.5 trends in 2020 was 16.8 times more than the WHO’s revised air quality guidelines, while Mumbai’s exceeded eight-fold, Kolkata’s 9.4, Chennai’s 5.4, Hyderabad’s 7 and Ahmedabad’s 9.8.
  • Every year, exposure to air pollution is estimated to cause 7 million premature deaths and result in the loss of millions more healthy years of life.
  • Hence both statements are correct.
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With reference to the World Health Organization (WHO) air pollution standards, consider the following statements:1. The upper limit of PM10, or particulate matter of size exceeding 10 microgram, is 20 microgram and has now been revised to 15.2. The new guidelines meant that among 100 global cities, Delhi’s annual PM2.5 trends in 2020 was 16.8 times more than the WHO’s revised air quality guidelines.Which of the statements given above is/are correct?a)1 onlyb)2 onlyc)Both 1 and 2d)Neither 1 nor 2Correct answer is option 'C'. Can you explain this answer?
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With reference to the World Health Organization (WHO) air pollution standards, consider the following statements:1. The upper limit of PM10, or particulate matter of size exceeding 10 microgram, is 20 microgram and has now been revised to 15.2. The new guidelines meant that among 100 global cities, Delhi’s annual PM2.5 trends in 2020 was 16.8 times more than the WHO’s revised air quality guidelines.Which of the statements given above is/are correct?a)1 onlyb)2 onlyc)Both 1 and 2d)Neither 1 nor 2Correct answer is option 'C'. Can you explain this answer? for Current Affairs 2024 is part of Current Affairs preparation. The Question and answers have been prepared according to the Current Affairs exam syllabus. Information about With reference to the World Health Organization (WHO) air pollution standards, consider the following statements:1. The upper limit of PM10, or particulate matter of size exceeding 10 microgram, is 20 microgram and has now been revised to 15.2. The new guidelines meant that among 100 global cities, Delhi’s annual PM2.5 trends in 2020 was 16.8 times more than the WHO’s revised air quality guidelines.Which of the statements given above is/are correct?a)1 onlyb)2 onlyc)Both 1 and 2d)Neither 1 nor 2Correct answer is option 'C'. Can you explain this answer? covers all topics & solutions for Current Affairs 2024 Exam. Find important definitions, questions, meanings, examples, exercises and tests below for With reference to the World Health Organization (WHO) air pollution standards, consider the following statements:1. The upper limit of PM10, or particulate matter of size exceeding 10 microgram, is 20 microgram and has now been revised to 15.2. The new guidelines meant that among 100 global cities, Delhi’s annual PM2.5 trends in 2020 was 16.8 times more than the WHO’s revised air quality guidelines.Which of the statements given above is/are correct?a)1 onlyb)2 onlyc)Both 1 and 2d)Neither 1 nor 2Correct answer is option 'C'. Can you explain this answer?.
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