Hii Pawandeep

To become an IAS officer you should appear for UPSC exam and should qualify it and to appear for UPSC you should be a graduate from a recognized university.Your 12th course does not matter here it can be science,commerce or arts.

Hope the details were usefull.

For further more details about UPSC,please do refer the link given below:

https://competition.careers360.com/articles/upsc-civil-services

Thank You