Firstly you have to clear if u are pursuing btech then from which trade every trade have special benefits and accordingly colleges are also there.
If you want best ones IIT ,NIT are best. If you want private college there are many BENETT UNIVERSITY, NMIMS UNIVERSITY, GALGOTIA IS GOOD.
But first decide after betch what you really waana do. I think your question is incomplete. But i ready to help all.
Thanks!!