Hi

JEE mains 2019 CUT OFF for different categories is given below:-

General :-89.7548849

GEN-EWS :- 78.2174869

Other Backward Classes (OBC-NCL) :-74.3166557

Scheduled Caste (SC) :- 54.0128155

Scheduled Tribe (ST):-44.3345172

PwD :- 0.11371730

Thus ,

as per previous year trends if you belong to OBC category,  at least 75 percentile in  JEE mains is required to qualify it's cutoff , when translated into marks than 75 percentile is near about 50 marks, but cut off keeps changing every year depending upon various factors like number of students that appeared in the exam, kind of marks obtained by them , toughness level of the examination etc so try to get at least  i.e near about  60 marks or more

Thank you