Hello Lokesh,
You can study Bachelor's degree in any stream in Engineering, Science, Management, Law, etc.
After 12 th standard you can study degree in the field you are interested like B.Tech, B.A, B.Com, B.Sc, B.B.A, B.C.A.
To know how to become IAS officer check below mentioned link.
https://www.careers360.com/keywords/ias-officer-career
To get more information go through below mentioned link.
https://competition.careers360.com/articles/upsc-ias-eligibility-criteria
May this information was helpful to you.
Best of Luck!!
After 12 th standard you can study degree in the field you are interested.
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