Well, the minimum percentage required for a student in class 12th Bihar board exam to get admission in the CUSAT depends upon the field you choose. If we see in fields such as Instrumentation Technology, Marine Engineering, etc all require different eligibility criteria.
Eligibility Criteria for B.Tech in Instrumentation Technology:
B.Tech. in Naval Architecture & Ship Building:
B.Tech in Polymer Science & Engineering:
B.Tech in Marine Engineering:
Taking admission in any of the fields of CUSAT is worth it. If you get a chance to get into CUSAT do take it. Being a National University, it has its importance and reputation.