If I will do my B.Tech in CS in any college, would I become a good app developer and would I know all about web development?

College is just a platform. But, if you are in a good college like BITS, IIT NIY, definitely the environment of that colleges will help you brother. And of course, all this depends on you, how you will spend your four years of B.Tech. That will decide how good you will be in your stream. Colleges ha