what would be the least cutoff mark for OBC in NEET 2019?

It depends on many factors like the State, the college, whether in All India Quota or in State Quota. To be qualified in NEET, as a student of OBC Category, you should score 40% of the top NEET score. For example if the top NEET score is 400, you should score atleast 100 to be qualified. Having said that not every qualified candidate can get a Medical seat. Cut off depends on various factors like no. of seats available, no. of candidates appearing for the exam, top NEET score and difficulty of the exam. So if you have any college or State in mind, do let us know and we will give you that specific information. In 2018, the cut off for OBC was 96-118 and around 54, 653 candidates qualified.