Dear Saumyadeep,

It is very difficult to determine cut off marks. 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.

Cut off differ for each category - General, OBC, SC, ST. The percentile will be determined on the basis of higher marks secured in All India common merit list in the upcoming NEET exam.

As you are from a reservation category it can be expected that, you  need to score more than 350 to get a seat in West Bengal State 85% Quota for NEET 2018

Best of luck for your exam.

Upvote my answer if it realy helps you.

Thank You.

This cant be predicted unless the exam is held. But gong by the trend of increasing the cutoff year after r year i think the cutoff is liable to increase a bit might be 321.