Dear Student,
Following are some details as per official data that might help you :-

Eligibility and Selection Procedure for BBA in Ravenshaw University, Cuttack:-

50% marks in aggregate in the qualifying examination (HigherSecondary) without the mark in extra optional, if any

Reservation of Seats:Scheduled Caste (SC)  16.25%, Scheduled Tribe (ST)  22,50%, Ex-Service Men and Family (ESM)  1%, Service Defence Personnel (SDP)  1%, Physically Handicapped (PH) with 40% and above disability  3%. The reservation is applied subject wise in each Honours course.

The above marks for eligibility are relaxed by 5% for SC/ST candidates.

Selection Process: Admission shall be made on the basis of merit in the qualifying examination
Hope this might help you.