Crucial topics for the Geography section in the UPSC exam include physical geography (such as landforms, climate, and ecosystems) and human geography (like population distribution, urbanization, and socio-economic factors). Candidates should also focus on geographical phenomena and their impacts, along with relevant case studies. Additionally, aspects like mapping, geographical techniques, and applications of geography in current affairs form an integral part of preparation. Mastery of these topics can significantly enhance candidates’ performance on the exam.