Hi pal,

The cutoff for BSC Biotech entrance is different for different universities some of the universities conduct BSc Biotech entrance exam. And some of universities give admission on the basis of 12th merit.

AIIMS Biotechnology Entrance Test

Jnu (Jawaharlal Nehru University) Combined Biotechnology
Entrance Examination

CBCEE (Combined Biotechnology Entrance Examination)

DU (University of Delhi) Biotechnology Entrance Examination.

Qualifing mark for these exams about 33% ,if u score well enough then your chance's for admission are strong.

Hope this will help you
Good luck.