Solving sample papers and previous years papers is very important as they help you to analyze yourself. You also get to see what kind of questions have been asked in recent years so you understand the pattern and at the end it just boosts your confidence and prepares you better...

Refer to the link below for more details about the same..

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

Best wishes. Thank you.