Hello snehal!!
Cutoffs for biotechnology is different for different universities .So just go through the link provide I https://www.google.com/amp/s/engineering.careers360.com/articles/nits-cutoff-for-btech-biotechnology/amp?espv=1 it may helps you a little bit.
Thank you!!

Hello student its very difficult to predict cut off of every college please help me with your preferable college in which you want to pursue Biotechnology engineering so that I can provide you exact information.

Feel free to comment if you have any doubt
Good luck