Hello Meenakshi Chatterjee,

There are more than 200 Colleges in India which offer a B.Tech. course (https://collegedunia.com/btech-colleges) in Biotechnology. Some of the top colleges for B.Tech. in Biotechnology are:

• Indian Institute of Technology, Kharagpur
• P.S.G. College of Technology, Coimbatore
• Delhi Technological University, Delhi
• National Institute of Technology, Warangal
• Vellore Institute of Technology, Vellore

Hope this helps you......