I am a PCB student and I want to do betch in biotechnology so which are the best colleges who provide this to a pcb student.

Yes, as a PCB (Physics, Chemistry, Biology) student, you can definitely do B.Tech in Biotechnology, but you need to choose the right colleges because not all accept PCB students. The good thing is that many private universities now allow PCB students without maths. 

Now coming to your main question,