I am getting 82 marks in obc category can i able to qualify jee advance and in which iit can i get a seat
Yes! You have a chances of Qualifying.But it is very difficult for you to get into good IITs with your score. Use the below link jee-Advanced Rank predictor 2019 to predict your jee-advanced rank. Input all the required details and then you can get your predicted rank.
And also use the below link to know what colleges can you get with your rank.
Https://engineering.careers360.com/articles/jee-advanced-college-predictor
Good luck!