Hii  Ritesh, 

Myself Shalini. For SC/ ST and Person with Disabilities (PWD) category candidates, the qualifying marks for eligibility shall be 55%, or CGPA 6.0 on a 10-point scale, or equivalent.So you are eligible to fill the application form.

But there is an entrance exam,you have to clear that exam to get admission in IIM.

Hope my answer will help you. 

Thank you. 

Best of luck!