The minimum qualifying marks in jee advanced 2019 for OBC category are 22.5 percent of the maximum marks which will be 84 as the maximum marks are 372. Apart from the total aggregate cut off you need to also qualify the subjevtwise cut off for each paper in jee advanced which is 9% of marks in that subject in that paper for obc category. Hope this helps. 

Hello,

Based on your rank you may get these colleges :-

1. RGIPT - B.Tech. (Chemical Engineering ) (4 Years, B.Tech)
2. IIP&E - B.Tech. (Petroleum Engineering) (4 Years, B.Tech)
3. IIP&E - B.Tech. (Chemical Engineering) (4 Years, B.Tech)

Also check the link below:-

https://engineering.careers360.com/jee-advanced-college-predictor?icn=JEE_Advanced_clgpd&ici=JEE_Advanced_article_contmap

All the best !!