Hey Abhishek,
Yes, you can go for Charter Accountant after doing your graduation. You need minimum 50% in graduation.
After this you will have to pass a common proficiency test (CPT) and after passing this you will have to register for the Integrated Professional Competence Course (IPCC).
After passing Integrated Professional Competence Course, the you can register as Articled clerks for practical training and for admission to the Final course of the Chartered Accountant.

All the best! :)

If you want to study CA after B.Com, all you need to do is acquire 55% marks in your graduation. ...After bcom you can directly start with your articleship.You are not required to give the first exam that is CPT.You will have to prepare for IPCC along with articleship