Q - 1253.  Which city was ranked the cleanest in India in October 2025, according to CREA’s Air Quality Snapshot? 

A. Gangtok
B. Shillong
C. Imphal
D. Aizawl

According to the Centre for Research on Energy and Clean Air (CREA) October 2025 report, Shillong recorded India’s cleanest air with a PM2.5 level of 10 μg/m³, while Dharuhera (Haryana) was the most polluted at 123 μg/m³.