Can one crack the UGC-NET only with solving previous year papers?

Since the Syllabus for UGC NET Examination has changed since June 2019, the previous year's papers would not help you much.

It is important to cover the whole syllabus comprehensively and then do a lot of practice using mock tests.

You must use your books for graduation or post-graduation since you have already read it once. It shall be useful to understand the concepts.

All the Best!!