IIT BHU takes the admission through JEE Advance. As per the analyzing report of Careers 360 it has AAAA+ which means outstanding. You can check the eligibility to apply for JEE Advance with given below link.

Eligibility

You should have scored atleast 75% aggregate marks in 10+2th standard (or equivalent) board examination. For SC/ ST and PwD candidates, the aggregate marks should be atleast 65%.

You should be within the category wise top 20 percentile of successful candidates in the respective 12th standard (or equivalent) board examination.

For further information you can go through with given below link.

JEE Advance Eligibility

Good Luck!