The eligibility criteria for IIT Bhubaneswar depends on the course that you are opting for. If you are planning to do your B.tech from the university the eligibility criteria are different and if you are planning to your M.tech from there then it is different. I'm attaching the link below from where you can get all the information about the entrance and eligibility criteria of the University.

https://www.iiit-bh.ac.in/admissions