I GOT 30.12 MARKS IN GATE AND IN S.C CATEGORY . WHAT I CAN GET ?

Ohhu Sorry !! Its Civil Engineering

Hello Saurabh, first of all congratulations on that score in GATE. Since you have not mentioned specifically which branch/course you want to pursue your masters in engineering, therefore I cannot actually judge which college you might get.

But entry into a particular college depends upon the following criteria:
1.  Number of candidates who appeared for the entrance examination.
2. Number of seats that a college has department wise.
3. Difficulty of the examination ( GATE 2019 )
4. Category of a candidate ( reserved/unreserved)
5. Reputation of the Institute.
6. Previous year's cut off patterns.

So, I can help you with the last point, i.e., the cut off patterns of last year. With those cut offs you can actually evaluate your chances of getting into a particular college/Institute. And can expect this year's cut off trends.

To get the previous year's cut off for IITs visit the link given:
https://www.google.com/amp/s/engineering.careers360.com/articles/gate-cutoff-for-iits/amp

To get previous year's cut off for NITs visit the link given below:
https://www.google.com/amp/s/engineering.careers360.com/articles/gate-cutoff-for-nits/amp

And if you are seeking a more accurate prediction, you can check our college predictor and know which college you can get into. The link is given below:
http://bit.ly/2J9S0MN

All the best!
I hope this helps.