Of course not. In order to get admission in government medical colleges. You have to qualify neet examination first. If you are in the top rank list you will be getting admission in government colleges without any donation fees. It is not based on your 12th board mark. Your MBBS admission is only dependent on your performance in need examination and the rank you got in neet. You will only have to pay your admission fees and though will be no further donations. Also you will be getting more money than you paid as stipend during your housesurgency. All the best and try to crack neet exam and achieve your goal to be a doctor. Thanks.