for Reap Section Prepare well from UGEE REAP Guide i.e. https://iiitprep.com/ugee-reap-guide-research-aptitude-test-2021/index.html

this source has paper pattern, ugee syllabus, pervious year papers visit : https://iiitprep.com/ugee-previous-year-papers-pdf-iiit-hyderabad/index.html

Dear Sricharan,

You can refer  A modern approach of logical reason by Dr. RS Agarwal. This book has three types of difficulty level questions from beginners to advanced level. This book is more than sufficient for the logical reasoning part but if you want to try a bit more then you can refer any CAT exam related logical reasoning books.

For PCM you can refer your Class 11th and 12th books and also NCERTS for basics concepts.

I hope this will solve your query.

Good luck.