Patna University conducts an entrance examination for admission. If you want to get admission to any college under Patna University, you will have to fill out the college form and appear on the entrance test.
After the result is declared, the university will publish the cutoff list. Check whether you are qualifying the cutoff according to your caste section. After that, you can go ahead with your admission procedure. So, try to perform well and secure a good score on the entrance test.