hello aspirant,

you need to provide us the university or the college you are referring to , so that we can get you an exact idea of the cuoffs for computer science for OBC.

however, I providing you the cutoffs for JEE exam.-

you can check the link to get the cutoffs for IIT's for previous years as well-

https://engineering.careers360.com/articles/iits-cutoff-for-b-tech-computer-science-and-engineering

hope that helps

all the best