Hello Suraj,

Firstly I would recommend you to apply using your BC category rank, as it will increase your chances in the competition for getting atop colleges. Based on your rank under BC category. You can get branches like CSE, Mechanical, Electrical, IT  etc. Now colleges where you can apply using this rank are 

Rastrakavi Ramdhari Singh Dinkar College of Engineering

Sitamarhi Institute of Technology, Sitamarhi

Shershah College of Engineering, Sasaram

Sitamarhi Institute of Technology, Sitamarhi

Katihar College of Engineering, Katihar

Purnea College of Engineering, Purnea

Saharsa College of Engineering, Saharsa

BP Mandal College of Engineering, Madhepura

For more colleges, you can visit the following link-

https://engineering.careers360.com/college-predictor-result/104440?s=31595981441529721046

For more results based on your other rank, you can use BCECE College predictor.

Hope you find this information useful. Have a great future ahead.