Kindly visit the link shared below to get the list of documents and contact details of the admissions office of Bangalore Institute of Technology

http://bit-bangalore.edu.in/admission/

The application form that need to be filled can be found in the link shared below:

http://bit-bangalore.edu.in/wp-content/uploads/2019/04/BIT-admision-form.pdf

Going by the information given on the site it might appear that the admissions happen through only CET & COMEDK but however since the application form has space for your JEE rank I would recommend you to speak to the admissions office once on the contact number that is available in the link which has the list of documents.