pl tell me i am getting bits-pillani-cs and iit-g-cswhich is better option

There is nothing like comparing the two as both of the institutions are highly reputed in their own places, it is a matter of choice on your own whether you may excel in your desired branch or not, else try visiting the official weblinks of some other reputed institutions to seek admission related information, you may consider – Harcourt Butler Technological Inst, Kanpur,..............................LOvely Professional Uni, Phagwara,...........................BITS Pilani, hyderabad Campus,...................................Rajasthan Tech Uni, Kota