Firstly by NITS if you want to mean the NIT silchar, then NIT silchar don't provide the course in Biotechnology. Now if you are asking about the NIT's then there is no mandatory rules that if you want to study Biotechnology BTech, then you have to study biology. So if you don't study biology then also you can study the BTech in Biotechnology in NITs through JEE MAINS examinations.

NIT's offering the course of BTech Biotechnology are provided below:

• NIT Jalandhar
• MNNIT Allahabad
• NIT Calicut
• NIT Durgapur
• NIT Raipur
• NIT Rourkela
• NIT Warangal
• NIT Andhra Pradesh

For more information regarding BIotechnology as a career, consider the link below:

https://www.careers360.com/courses/b-tech-in-biotechnology

I hope this helps. Wish you a great eve!