Hey, Devasis 431 score seems a bit decent to land you into a seat in decent government college Odisha through ex servicemen quota but it also depends on a lot of other factors as well like what is your rank, and how many seat are available in that particular region and that particular quota .I would suggest you to put your quota while registering for counselling and go through the list that is released on the frequently. So that you get to know whether you're eligible to gain a seat or not.