First of all youe question is quite counfusing and not cler wordings. You have obtained 254 rank and it seems that you want to go for the BSc. nursing. Now the rank you have obtained is good enough for the govt. nursing institute but we cannot predict the acuurate college that you will be getting through the exam. There is a simple process of counselling in which you need to fill the choices and give the preference to the govt. colleges first and if you fulfil the criteria then you will surely get the institute of your choice.