Solving and checking previous year really helps you since it can guide you better.. And you can get to see what type of questions are actually asked in the exam. You get to know the pattern of the paper.

Below is the link where you can find some sample papers as well as previous years question paper..

https://engineering.careers360.com/articles/karnataka-pgcet-sample-papers

https://university.careers360.com/download/sample-papers/pubdet-life-sciences-question-paper-2019

Best wishes. Thank you.