Delhi takes this place for the most pollution citises in the world(a) 2nd (b) 3rd (c) 4th (d) 5th
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NEW DELHI (Reuters) - New Delhi was the world's most polluted capital city for the second straight year in 2019, according to a Swiss-based group that gathers air-quality data globally. India was also home to 21 of the world's 30 most polluted cities, IQ AirVisual said in the study which focused on the amount of PM2.
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