Previous year question papers are critical in UPSC preparation as they provide insight into the exam pattern and types of questions asked. Analyzing these papers helps candidates understand key topics, judge the weightage of subjects, and identify recurring themes. Practicing with these papers also enhances time management skills under exam-like conditions, reducing anxiety and improving performance. By reviewing their answers, aspirants can pinpoint weaknesses and actively work on them. This reflective practice fosters a deeper understanding of concepts, ultimately leading to greater confidence and preparedness for the actual exam.