Sample papers are essential in the preparation process for UPSC as they provide insight into the exam pattern and typical question formats. Practicing with sample papers allows candidates to gauge their preparedness and time management skills, helping identify strengths and weaknesses in their knowledge base. Furthermore, solving sample papers simulates the real exam environment, enhancing confidence and reducing anxiety on the actual exam day. Regular practice with these papers can also help aspirants develop strategies for approaching different types of questions, leading to improved performance in both the Preliminary and Main Examination.