As per the UPSC IAS examination eligibility criteria, candidates must have completed your graduation in any field from a recognized board or university and then they can appear for the IAS examination...

Refer below to the link for knowing the eligibility criteria for the same...

https://competition.careers360.com/articles/upsc-ias-eligibility-criteria

IAS exam has following subjects - General Aptitude, Verbal reasoning, Englihs, General Studies including history and geography so you can do BA/MA in any of these maybe...

Refer to the link below to know more about the IAS exam paper pattern..

https://competition.careers360.com/articles/upsc-ias-exam-pattern

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