Hello student as per eligibility criteria no you're not eligible.
Feel free to comment if you have any doubt
Here you need to understand that JEE mains entrance exam doesn't have any percentage criteria inorder to sit in it rather this you have the criteria for getting into the college. So as you said you are from the respective category and with this much of percentage in it, it might be harder for you to get into the Government Institutions but if you are aiming for the private once then it might be ohk for that and yeah you are eligible for the JEE mains.
All the best
IIT/JEE 2020 Online Preparation
Get Access to AI based coaching with Video Lectures, Mock Test, Sample Paper, and Prep Booster
You can appear for jee mains exam with this marks but cannot take admission in IIT,NIT or GFTI evan if you get good marks in mains. And you cannot give JEE advanced also. Because minimum marks rewurequ for OBC category are 75% aggregate in class 12th.