Engineering Entrance Exam

I think they won't consider your board exam marks for admissions but there is some minimum eligibility. But you have scored more than what is needed. So, don't worry. Scholarship based on rank in Amrita Entrance Examination-Engineering 2017:
10% of students admitted are eligible for the scholarship in the first year of B.Tech in each of the four campuses based on merit. This will be renewed in subsequent years as per the University rules. It is awarded as a waiver of tuition fee ranging from 90% to 25% depending on the rank in the Amrita Entrance Examination-Engineering AEEE 2017.
Fee Waiver Based On High Ranks in State Board Exams and CBSE / ICSE Exams 2017:
The first 3 rank holders of all State Board Examinations are eligible for 90% waiver of Tuition Fees in all the 4 campuses. The first 10 All India Rank Holders of CBSE and the first 10 All India Rank Holders of ICSE are also eligible for 90% waiver of Tuition Fees in all the 4 campuses. In order to continue the fees waiver in the subsequent years under all the above schemes, the student should maintain Grade Point Average (GPA) of 7.00 in each semester and satisfy the rules framed by the University for the purpose.