What will be expected cutoff for kgmc in neet 2018 for 85% state quota As I belongs to obc category

Dear
It is very difficult to determine cut off marks for any colleges in a state before exams beacuse it depends on sevral factors.If you look at the trends of the cut off scores over the last 2 years, you'll understand that the cut off scores have only increased with time.
If you are a General Category Student, try to score 540+ in neet.
It is not so easy to predict your rank beacuse it is changing every year.
Hope this is helpful.
All the best
Thank You.

It is very difficult to determine cutoffs prior to examination. However, as per an average over previous years, try to score around 520+ to get a seat in state quota for OBC category.
Good luck.