With 280 marks you cannot  get mbbs in any colleges neither government nor private. 

Out of 700 you need to score 450- 500 and above  marks to get good mbbs college (general category) 

For obc/sc/st you should at least have 370 and above marks to get seat in mbbs college. 

Hello Sai, Getting an MBBS Seat in a government college is not possible if you have scored 280 marks. You might try in private colleges and take admission through donation but getting admission in these marks is not possible.

hey sai

it depend on in which state and type of college you want seat. however with 280 marks and belong to unreserved categorry it is difficult for you to get government college. however you can predict you college by visiting followig link https://medicine.careers360.com/neet-college-predictor?icn=neet_clgpd_landing_page&ici=clevertap-sticky-web 

thankyou. goodluck