Hello Krishan, 

welcome to OpenStreetMap and happy to see you folks contributing to better IIT BHU map. 

I just want to highlight that "Gandhi Smriti Extension Girls Hostel" is already marked as building (see https://www.openstreetmap.org/way/857428859), so you need not to add a node. It's duplicate and not required. 

Feel free to join OSM India Telegram group https://t.me/OSMIndia for any doubts. 

Cheers!
sahilister