hey aparna 

since neet result are not out yet we are predicting cut off on the basis of previous year cut off trends. as per previous year a candidate must score above 400 marks for obc categpry to get mbbs seat under all india  cut off. since there are only 15% seats are reserved under all india quota so cut off is generally high. so it is adviced that candidate must score above 400 marks to be at safer side. 

goodluck!