Well it depends on what level are you appearing for the interview. If you are appearing for the UGEE exam then you will be asked basic questions of upto 12th class level and maybe about your interests hobbies and extra curricular activites along with other details which you have filled in your form during time of applying.

If you are appearing for lateral entry then they will ask you questions from courses you have taken in the past two years. They will ask you about your research interests and also why you want to leave your present college as such and join their institute.