Hi Raj

The cutoff marks for shortlisted candidates in different categories in the JEE (Main) stream were: 295(General); 196(OBC-NCL); 150(SC); 108(ST), 181(KM) and 181(PH). Among the above-shortlisted candidates, those who have secured less than 275 marks in JEE(Main)need to attend the interview.
 
Which means if you clear the cut-off from your category and your marks are above 275 you don't have to attend any interview
They don't care about board marks for admission through JEE- MAINS. Only your score in JEE-MAINS counts.