Hii Aditya,

Top biotechnology Engineering colleges in India are-

• Indian Institute of Technology Bombay. ...
• Vellore Institute of Technology, Vellore. ...
• Indian Institute of Technology Kharagpur. ...
• All India Institute of Medical Sciences New Delhi. ...
• SRM Institute of Science and Technology, Chennai. ...
• Birla Institute of Technology and Science, Pilani. ...
• University of Delhi, Delhi.

it is a 4 year course.

and you will have to clear JEE main or JEE Advance to get admission in Biotechnical Engineering.

many collerges Take their own CET for admission.

Simply after JEE main result and JEE advance result.

councelling will be held then you will have to register in that and you will fill your choices,college.then according to your rank you will get a call from a college for admission.

  for more information please go through the given link-

                  https://university.careers360.com/colleges/list-of-biotechnology-universities-in-india

hope tyou understand

thank you