I think you have heard the wrong information. Karnataka MBBS admissions or BDS admissions are granted only on the basis of NEET. There is no other examination through which one can get the seat in Medical courses. If there will be seats left after the NEET counselling round then one can apply for the seats. But the admissions are highly dependent on the NEET only. So please have the rightful of information and do not assume the things by yourself and iys better that you go to the help centers where you can get the right information and even your college or institute will also provide you the information about admission and counselling.