Hi rashmi,

Marks that are needed to qualify are quite low like around 130-150/720. 

But qualifying doesn't mean that you have secured a government medical seat.

For that you have to score at least 550+.

All the best.

The cutoff for qualifying neet in general catagory was 50 percentile which cooresponds to a mark of 137. Please note that this is only the qualifying marks cutoff is higher approx 540.

In 2018 i expect a marginal change in the cutoff though. 

Well you can't really know what score is enough to get a seat because of the changing level of difficulty  of exam everyday. 

The syllabus remains pretty much the same every year but the level is different. 

The performance of all the students determines the cutoff. 

So the best is to simply work hard and score as much as possible.