Which subjects foes UPSC includes
UPSC exam consists of all round subjects such as physics, chemistry, basic mathematics, economics, geography, history, literature, general knowledge, current affairs etc., Specifications are tested for different posts at a later level. In order to know the syllabus, you can either visit the UPSC official website or refer the link given below -
https://www.google.com/amp/s/competition.careers360.com/articles/upsc-ias-syllabus/amp
Hope this helps.
Good luck!