It does not do if you take admission in any of the colleges. You have to be focused towards your academics while preparing for any competitive exams.

Ankur,

Preparation of gate doesn't depend on the college at all since most of the teachers there are not going to give you proper guidance for GATE which is actually very much necessary. Well you can choose Amity over MMM for being autonomous. Since here you can access a library which may have more collections side by side attendance will not become a heavy weight factor here. You can pay time for preparation.

Regards