hi,

GPAT and NIPER jee both are the master pf pharmacy entrance test and both are very challenging exams for pharmacy graduates who want to pursue the pg course from top institute in india, however for gpat or niper preparation you may start preparing from 3rd year of pharmacy course. you may find gpat 2020 questions on NTA website.

gpat.nta.nic.in

see there is many online coaching available for gpat from many sourses like gpattutor, pharmatutor, rahe etc. you need to select as per your choices and quality of the lectures and notes. also some of the books you may follow to solve previous years papers,

The Pearson Guide to GPAT and Other Entrance Examination in Pharmacy

upkarks gpat, niper jee guide

GPAT: A Companion, Publisher-Career Publications