You can check your chances in various colleges based on your score and category, you should try Careers360 college predictor and rank predictor.

Link for Careers360 rank predictor:- https://engineering.careers360.com/gate-college-predictor

All the very best and good luck.

According to your marks your score would be around 500-550, to get yourself peace you need to open this link and fill all the details correctly.

You will get what you want 

https://engineering.careers360.com/gate-college-predictor?icn=gatecollegepredictorwithpsuchances%26e-books-clgpd-trial&ici=cahometool_lp