Sir can i get any nit my obc rank is 45312

Yes, you have fair chances to get admissions into good  nit but not the top ones. You can get the lower bodies of the nit with a choice of your branch too. Its a good rank and highly privileged one that could certainly help you seek admission in the college of your choice.

Hello Mohit!

I am sharing below a Careers360 link where you can compare different colleges and their cutoffs and decide that which one suits you the best and where you are eligible for a seat. It has got cutoff trends for the past years. So can can predict your destination using it.

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

Hope that it helps. All the best.