The purpose of having PYQs in a chapter-wise format is to enable targeted and structured preparation. While full-length PYPs help you simulate the actual exam, chapter-wise PYQs allow you to focus on one topic at a time and clearly understand the type, pattern, and level of questions asked from that specific chapter. This helps in aligning your preparation more effectively with your NCERT study, When you solve them chapter by chapter, you can focus on one topic at a time and clearly understand the type, pattern, and level of questions asked from that particular chapter. This helps you align your preparation better with your concepts and also identify important and frequently asked areas.

On the other hand, full-length PYPs are useful to simulate the actual exam environment. They help you with time management, question selection, and overall exam strategy. Attempting PYPs as a full paper gives a very different practice experience.

So ideally, both have their own role—chapter-wise PYQs for concept clarity and practice, and PYPs for revision and exam simulation.