Hello!

According to previous year cut off you might get Civil Engineering branch in NIT Patna, on the basis of rank secured by you in OBC NCL Home state category. The closing rank for Civil Engineering in 2018 for OBC Home state was 18131,in NIT Patna.

https://engineering.careers360.com/articles/jee-main-cutoff-for-nit-patna

For more accurate prediction you can also use this College Predictor tool

https://engineering.careers360.com/jee-main-college-predictor