Effective ways to revise the syllabus before the UPSC examination include creating revision schedules that allocate specific time slots for each subject. Active recall techniques, such as summarizing information without notes, help strengthen memory retention. Group discussions and peer studying can enhance understanding through collaborative learning. Furthermore, utilizing previous year question papers for practice and identification of recurring themes assists in focused revision. Incorporating intervals for breaks and self-assessment ensures sustained motivation and clarity in understanding, ultimately boosting retention of content.