Dear Aspirant, some of the top Govt. engineering colleges which offer B.Tech in Bio-technology  are :

1. IIT Roorkee
2. IIT Guwahati
3. NIT Warangal
4. NIT Calicut
5. NIT Allahbad
6. NIT Durgapur
7. NIT Andhra Pradesh

You could check more options here-

1) Through JEE: https://engineering.careers360.com/colleges/list-of-engineering-colleges-in-india?ownership=Public/Government&degree=B.E%20/B.Tech&branch=Biotechnology%20Engineering&exam=JEE%20Main,JEE%20Advanced

2)Through all exams-

https://engineering.careers360.com/colleges/list-of-engineering-colleges-in-india?ownership=Public/Government&degree=B.E%20/B.Tech&branch=Biotechnology%20Engineering

Hello,

Here is the list of Biotechnology government colleges in India.

• Jamia Millia Islamia
• Panjab University (PU)
• Bundelkhand University, Jhansi
• Chhatrapati Shahu Ji Maharaj University, Kanpur
• Institute of Technology, Guru Ghasidas Vishwavidyalaya
• The Mahatma Phule Krishi Vidyapeeth (MPKV), Rahuri
• Magadh University, Bodhgaya
• Mumbai University (MU)
• Cotton University Guwahati
• Indira Gandhi National Tribal University (IGNTU), Amarkantak

Please click the below link to know more about these colleges

https://university.careers360.com/colleges/list-of-biotechnology-universities-in-india?ownership=Public/Government&degree=B.Sc.,B.E%20/B.Tech,B.Sc.(Hons)

• RAJIV GANDHI CENTRE FOR BIOTECHNOLOGY, TRIVENDRUM
  
• UNIVERSITY OF HYDERABAD, HYDERABAD
  
• NATIONAL DAIRY RESEARCH INSTITUTE, KARNAL
  
• UNIVERSITY OF MUMBAI
  
• GURU GOBIND SINGH INDRAPRASTHA UNIVERSITY, NEW DELHI
  
• MADRAS VETERINARY COLLEGE
  
• PANJAB UNIVERSITY
  
• TAMILNADU AGRICULTURAL UNIVERSITY
  
• UNIVERSITY OF PUNE