Practicing previous year questions (PYQs) in test mode is crucial for UPSC preparation. It helps aspirants understand the exam pattern, identify important topics, and analyze recurring trends. Attempting PYQs multiple times under timed conditions enhances accuracy, boosts time management skills, and builds exam temperament. It also aids in self-assessment by highlighting strengths and weaknesses, enabling focused revision. This practice instills confidence and ensures familiarity with the exam's difficulty level.