Hello aspirant,

There are colleges which gives admission on the basis of board marks, from hsc board  MHT CET is an entrance exam to apply for Some other exams are TNEA, REAP, Sastra university, punjab B.tech admission and MP B.tech admissions.You must  note that the admissions to the state based colleges may be subject to domicile regulations giving preference to the state candidates, check the eligibility in addition to the details of the institutions that offer B.Tech Admissions on the basis of Class XII.

Here is the link to give you details of all the above mentioed exams: https://www.google.com/url?sa=t&source=web&rct=j&url=https://engineering.careers360.com/articles/btech-admissions-on-basis-of-class-12th/amp&ved=2ahUKEwiCx5zvps_iAhVO7XMBHVsDCnwQFjAAegQICBAC&usg=AOvVaw2zUNOgRQWgnqR4GxbkUoSR&ampcf=1

Best of luck!!