Hi Vikrant, As per your query about the marks cutoff, i would like to inform you that it will vary every year based on the difficulty level of ques paper and number of students scoring that mark. 

But going by previous year trend i would like to inform you it comes around 500-550...

Better if you  can try for near 600

Best of luck 

Hopefully it helps 

Regards 

Dr Parmanand Agarwal 

MBBS MD 

Career counselor 

The cut off varies college to college so please be specific which one you are talking about but in previous year the closing rank for round 1 obc category was 5922 so as per this much rank the tentative score should be 570 approx  as the cut off varies year to year.

Good Luck!!!!