Topic-wise revision is critical during the preparation for UPSC examinations as it helps in reinforcing understanding and retaining information systematically. By breaking down the vast syllabus into manageable sections, candidates can focus on key areas, ensuring a thorough grasp of important concepts. This methodical approach also aids in identifying weak spots that need further attention, facilitating targeted strengthening of knowledge. Regular revision promotes confidence and reduces anxiety closer to the exam date. Additionally, it assists in connecting various topics, which is essential for interdisciplinary questions often encountered in the UPSC exams.