hello
The eligibility criteria for UPSC CSE is that the candidate should have a graduation degree from any recognised university in any discipline. So, yes you are eligible for appearing in UOSC CSE exam after B.Com. You can start your preparation with NCERTs of Geography and History of class 6-10th
IAS Eligibility Criteria 2021
https://competition.careers360.com/articl es/upsc-ias
hope this helps!
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