According to the official notification ,the  eligibility criteria that the student should qualify in 12th standard ."The minimum qualifying marks for consideration of the candidate to the selection process of various categories is mentioned below:

general/OBC - 50% marks

SC/ST/PC       - 40%marks

The students who are eligible will be selected and those students will be allotted to their respective department according to their rank and as well as their preference.

For more details kindly click on the link given below:

https://university.careers360.com/articles/icar-aieea