Hello, Srinivasa Reddy

You may not get selected for the top NIT colleges if your rank is in between 45000-50000.

You may get admission in some colleges like, Sant longowal institute of engineering and technology, Tezpur University, Gurukula Kangri Vishwavidyalaya,etc. Try to get a good rank so that you can get admission in the top NIT's. You can predict the college by yourelf by visiting uou careers360 predicting website I'm goint to give you the link below just by filling few columns you'll get you college predicted.

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

In the above link you have to fill the details about your rank, your state, select the caste group, select the gender, and select wether you are specially abeld or not.

All the best for you future.

Thank you..