Google hire which collage???
It does hire from private institutions like BITS Pilani, Goa, IIIT Hyderabad and others.
There are many candidates in Google or such companies which are chosen based on their talent and knowledge and not because they are from a good ranked college.
So knowledge is the first thing you should focus upon. Improve your skills and be a master in it.
Good luck.

College of Engineering,Pune.
Thapar University, Patiala.
Delhi Technological University, Delhi.
Netaji Subhash Institute of Technology, Delhi.
PEC University of Technology, Chandigarh.
Manipal University etc.
Hope this helps!!!!