IIT JAM is an Entrance Exam conducted for the admission of M.Sc programme to the postgraduate science programmes offered in 18 IITs and IISc Bangalore. You can check the complete eligibility to apply for the exam with the given below link.  https://university.careers360.com/exams/jam

The Other colleges are University of Delhi, Banaras Hindu University etc.

If you want to know about any particuler college then let me know.

Good Luck!