Hi dear,

             To get admission in IIT Chennai ,Your Minimum aggregrate marks in JEE advanced 2018 should be less than 115. Previous year marks in JEE advanced 2017 was 115 in OBC NCL category and minimum marks in each subject should be 10 .

To get admission in CSE branch your AIR rank should be below 120 and for other branches it should be below 1200 in OBC category.

All the best