I will enlist down some of the top Btech Biotech engineering colleges of India -

1. Indian Institute of Technology, Madras
2. Indian Institute of Technology, Kanpur
3. Indian Institute of Technology, Khadagpur
4. Indian Institute of Technology Roorkee
5. Indian Institute of Technology, New Delhi
6. BITS PILANI
7. NIMS University, Jaiipur
8. IIT, Guwahati
9. IIT, Hyderabad
10. IIT, Mumbai
11. LPU, Phagwara
12. NIT Rourkela

Refer to the website below for more details...

https://engineering.careers360.com/colleges/list-of-bio-engineering-colleges-in-india

Best wishes. Thank you.