Which city is the second most polluted city out of the 50 most polluted cities in the world in 2020 by a report prepared by British company HouseFresh?

• A. Allahabad
• B. Ghaziabad
• C. Gurugram
• D. Nashik

Answer: (B)

Uttar Pradesh's Ghaziabad was adjudged the second most polluted city out of the 50 'most polluted cities' in the world in 2020 by a report prepared by British company HouseFresh. Ghaziabad reported an average Air Quality Index (AQI) of 2.5 particulate matter (PM) in 106.6 mic.g/m3.