As you have asked about the exam of Joint Admission Test for M.Sc (JAM), I am giving you information about it, check below for the details

The Indian Institute of Science Bangalore (IISc) and Indian Institutes of Technology (IITs) conduct the Joint Admission Test for M.Sc. for admission to Integrated Ph.D. Degree Programmes at IISc Bangalore and M.Sc. (Two Years), Joint M.Sc.-Ph.D., M.Sc.-Ph.D. Dual Degree, M.Sc.-M.Tech., M.Sc.-M.S.(Research)/Ph.D. Dual Degree and other Post-Bachelor Degree Programmes at IITs.

Applicaiton fees:

Group/ Category One Test Paper Two Test Papers
Female (All Categories)/SC/ST/PwD Rs 750/- Rs 1050/-
All Others Rs 1500/- Rs 2100/-

Format

The JAM Examination is conducted online and in English only.
There are seven papers (objective questions) on the following subjects:

Biological Sciences (BL)
Biotechnology (BT)
Chemistry (CY)
Geology (GG)
Mathematics (MA)
Mathematical Statistics (MS)
Physics (PH)

Each paper is divided into three sections, consisting of 30 multiple-choice questions, 10 multiple-select questions and 20 numerical-answer questions.
The duration of the exam is 3 hours