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For fourth consecutive year in 2021, Delhi world's most polluted capital i
Updated : 4 years, 2 months ago IST
New Delhi [India], March 22 (ANI): Delhi has been declared the most polluted capital in the world in terms of air quality for the fourth year in a row in 2021, reveals a new report which says 35 out of 50 cities with worst air quality were in India.
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