Salient features of world physical geography and distribution of key natural resources across the world (including South Asia and the Indian subcontinent); factors responsible for the location of primary, secondary, and tertiary sector industries in various parts of the world (including India) ...... This is mentioned in gs -2 syllabus? But I have seen people saying that this is only limited to CSAT.
First attempt in 2014 - couldn't clear prelims, second to be in 2018
Optional - medical sciences