Hi Rakshit,

Here are the some best colleges which providesMBA in IB:

Indian Institute of Foreign Trade , New Delhi
Amity international business school, Noida

University of Delhi, Delhi   
Aligarh Muslim University Aaligar
Symbiosis Institute of International Business, Pune
Banaras Hindu University, Varanasi

If you have any query please feel free to ask me

Thank you