my gate score is 352 its vey less but may i get any nit in civil enginerring for mtech
For Civil engineering you should at least cross 640 to be on safer side.
You can check your chances in various colleges based on your score and category, y ou should try Careers360 college predictor and rank predictor.
Link for C areers360 rank predictor:- https://engineering.careers360.com/gate-college-predictor
All the very best and good luck.