Hello aspirant,

YES, you can be eligible to appear for UPSC Civil services examination if you are of minimum 21 years of age and have completed your graduation form any recognized course.

furthermore, the eligibility criteria for UPSC Civil services examination is as follows :

AGE LIMIT : 21 to 32 years

EDuCAIONAL QUALIFICATION : Bachelor's degree ( BA , B.Com , B.Sc , BBA , BCA , B.Tech etc.) with at least one of the subjects namely Animal Husbandry & Veterinary Science, Botany, Chemistry, Geology, Mathematics, Physics, Statistics and Zoology or a Bachelor's degree in Agriculture, Forestry or in Engineering from recognised university.

Further, to know full complete eligibility criteria fro UPSC Examination you can follow the below mentioned link to know more on this : https://competition.careers360.com/articles/upsc-ias-eligibility-criteria

I hope that this will help.