Which exam is required for Ph.D. in IIT?

IIT JAM (Indian Institute of Technology-Joint Admission test for Masters), GATE (Graduate Aptitude Test in Engineering), CSIR NET (Council of Scientific and Industrial Research-National Eligibility Test), JEST (Joint Entrance Screening Test), NBHM (National Board for Higher Mathematics), and UGC NET

The Ph.D. degree is awarded in recognition of outstanding accomplishments, independent research, and the application of scientific knowledge to the solution of technical and scientific problems. The basic concept underlying the research work is creative and productive inquiry. The specifics of vario