Official Website: https://jam.iitkgp.ac.in/
official Mock Test Link 1: https://www.digialm.com//OnlineAssessment/index.html?1048@@M62
Official Mock Test Link 2:
https://www.digialm.com//OnlineAssessment/index.html?1048@@M54
Official Mock Test Link 3:
https://www.digialm.com//OnlineAssessment/index.html?1048@@M77