Patna: Rajgir, with a ‘very poor' air quality index (AQI) of 313, was the most polluted city in the country on Friday. State capital Patna's AQI was 252 in the ‘poor' category. The major ...

India has 29 states with at least 720 districts comprising of approximately 6 lakh villages, and over 8200 cities and towns. Indian postal department has allotted a unique postal code of pin code ...