Critical aspects of Indian geography for UPSC General Studies papers include physical features such as the Himalayas, major rivers like the Ganges and Brahmaputra, and their impact on climate and biodiversity. Additionally, understanding the distribution of resources and population demographics is vital. Key topics may include the significance of the Indo-Gangetic Plain, Western Ghats, and the Thar Desert. Aspirants should also grasp the geopolitical significance of regions, including borders and neighboring countries. A comprehensive grasp of these geographical elements can assist in tackling questions related to ecology, development, and regional planning effectively during the examination.