Previous years' question papers are critical for UPSC preparation as they provide insight into exam patterns, frequently covered topics, and question framing. Reviewing these papers allows candidates to understand the depth and scope of questions, enhancing their ability to anticipate potential areas of focus. Practicing with past papers also helps build confidence and improve time management skills during examinations. Moreover, analyzing performance on previous papers enables aspirants to identify strengths and weaknesses, guiding their study strategies and refining their preparation approach for better results.