Colleges in Surat

Yes,you can try for it.

Hello Pankaj, you have scored 91 percentile in JEE Mains and in addition you belong to SC category also. I am sure with this combination you will get admission in any NIT that you desire. However to help you I am attaching a link that can predict the college that you can get based on your performance in JEE Mains. I hope this helps. https://www.shiksha.com/engineering/jee-main-college-predictor
Best wishes to you.

Hello Preet, I hope you have mentioned in the percentile and not the result in absolute terms. What is of most important is the ranking and not even the percentile. I am sure you know your ranking in this examination. For your help I am attaching a college predictor which will predict the possibility of you getting your desired college based on your percentile / ranking in JEE Mains. https://www.shiksha.com/engineering/jee-main-college-predictor
Best wishes to you.

The last year closing rank at SVNIT for Integrated M.Sc. (Mathematics) was 126745 in general category. So you can get the chances here for doing integrated M.Sc. (5 years) course. The following are the other options for you.
1. Auro University
2. P. T. Sarvajanik College of Science.

Your expected JEE Main AIR is about 68316. The last year closing rank in B.Tech CSE at SVNIT was 13001 for Female general category. So keeping the last year of trend in consideration your chances are moderate here.