Hello Anurag.

I would suggest you to go for Allen. It has three branches in india. Kota, Punjab and Ahmedabad. It has a very good study material which is based on N.C.E.R.T textbooks and so it is very easily understood and once you are thorough with the concepts, you can solve most of the MCQs provided for practice.

They hold “Open Sessions” . These sessions include distribution of medals to top 8 students of every test, some fun recreational activities and some motivational songs by the Head of Departments of every subject. These sessions are really good and you get filled with new enthusiasm. 

Allen has also a special feature that it holds an everyday evening doubt counters. It is a session where many teachers are available for every subject during the evening hours.

hope this helps. good luck.