Hi Mohith

It doesn't really matter from which college you are getting graduated. You need to get a minimum of 65% of\r 6.84 gpa on a scale of 10 to be eligible to apply for a job in ISRO. If this criteria is met, you need to apply for a written exam after which a personal interview takes place and on the basis of that, candidates are recruited. You can also apply through GATE, you'll just have to clear the cut-off set by ISRO and then you can appear for the personal interview.