I applied through university. The process took 1 day. I interviewed at Indian Institute of Science (Bengaluru) in June 2016
Interview
A national level test either IIT-JAM (Joint Admission for Masters) or JEST (Joint Entrance Screening Test). If you qualify anyone, then according to your rank they call you for an interview.
Interview questions [1]
Question 1
Draw a particular mathematical expression/function roughly.