To get into IIT Bhubaneswar civil engineering you need to get through a written exam and an interview. After receiving the call letter from IIT Bhubaneswar, make travel arrangements, and reach there a day before, get settled properly before the written exam/ interview. You should study and prepare only for that subject for which you are being called. Mostly in interviews, they don’t ask Maths and Aptitude so you can skip it, but prepare your core subject properly. The results of the written test are declared within 1 hour of the exam. If you are selected, you will have to go through document verification. You might have the interview on the same day or you will have to wait for one more day.
The interview is purely technical, generally, questions are asked to test your basics concepts. But as it is IIT, there is no boundary of the questions. They can go deep into concepts. Try to answer directly. If you are a dropout student then you must have a valid answer ready for your Gap. The interview takes a maximum of 15 mins and at least 3 Interviewers will be present in the interview board.