Hey,

For being eligible to write BITSAT, c andidates must have passed 12th or equivalent exam from any recognized board with Physics, Chemistry, Mathematics and English Subjects. Candidates must have obtained 75% marks in PCB or PCM group with at least 60% in each subject physics, chemistry, mathematics/biology.

If you have 60% in each subject, you'd be eligible to write the exam.

Hope this helped you

Thank you and keep asking :)