According to the recent report from IQ Air which of the following is the most polluted capital city in the world?
A. Mumbai
B. Delhi
C. Bengaluru
D. Hyderabad
Explanation:
According to the report from IQ Air, Delhi remained the most polluted capital city in the world but India, on the whole, had improved its average annual PM 2.5 (particulate matter) levels higher in 2020 than in 2019.
