2022
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Question
[CLICK ON ANY CHOICE TO KNOW THE RIGHT ANSWER]
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Dhaka
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Varanasi
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Colombo
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New Delhi
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Detailed explanation-1: -The report published Health Effects Institute (HEI) shows that Delhi has the highest average level of fine PM 2.5 among the world’s most populated cities.
Detailed explanation-2: -Delhi and Kolkata were ranked first and second in the list of top 10 most polluted cities when PM2. 5 levels were compared, with Delhi and Kolkata reporting an average annual exposure of (relative to population) of 110 µg/m3 and 84 µg/m3 respectively.
Detailed explanation-3: -Delhi was the most polluted city in 2022, with an annual average PM2. 5 concentration of 99.71 ug/m3 – 2.5 times the safe limit (40 ug/m3) set by the CPCB.
Detailed explanation-4: -The most polluted city in the world is a notable climber in Saudi Arabia, with Dammam averaging 124.11 micrograms of PM2. 5 as it was ranked 11th last year. The number of Indian cities on the top 25 list decreased from 10 to 9 as one Chinese city joined the list.