What will be the best college?Gate Score 413 Catagory : SC

Hello Rahul, the best college that you can get, depends upon your choice of course/branch in your M.Tech. Since you haven't mentioned anything about it, I can only tell you the parameters on the basis of which you can assess your chances of getting into any college.
The parameters are:
1. Number of candidates who appeare d in the entrance examination.
2. Number of seats available in a college.
3. Difficulty of the examination (GATE 2019)
4. Category of a candidate, whether reserved or unreserved.
5. Reputation of the Institute.
6. And most importantly the previous year's cut off trends.

I can help you with those previous year's cut offs,  you will just have to visit the links given to you.

For IITs:
https://www.google.com/amp/s/engineering.careers360.com/articles/gate-cutoff-for-iits

For NITs:
https://www.google.com/amp/s/engineering.careers360.com/articles/gate-cutoff-for-nits

Also, to get some accurate predictions about the Colleges you can get, please use the College Predictor, link is given below.
http://bit.ly/2J9S0MN

All the best!
I hope this helps.