Time management is very much important in IIT JAM. The eduncle test series for IIT JAM Mathematical Statistics helped me a lot in this portion. I am very thankful to the test series I bought from eduncle.
Nilanjan Bhowmick AIR 3, CSIR NET (Earth Science)
Shanu arora
you can visit at Fiziks Coaching website or career endeavour website for previous year papers ,they have open source of previous years question .