Practicing previous years' papers is crucial for enhancing exam readiness for UPSC. It familiarizes candidates with the exam pattern, types of questions, and marking schemes. This practice helps in developing efficient time management skills, enabling students to allocate time wisely during the actual exam. Furthermore, reviewing past papers allows aspirants to identify important topics frequently covered, guiding their study focus. Analyzing answers to these papers can also improve writing skills and critical thinking. Overall, consistent practice builds confidence and enhances performance on examination day.