Dear aspirant,

Both the ranks are considered. But the two ranks are alloted in a particular way.

You will be alloted with your general rank and if you will not get a seat through general rank only then you will be alloted on the basis of your obc rank.

Coming to your second query, it is very difficult to get a seat through josaa with this rank. But if you belong to Mizoram Meghalaya, arunachal Pradesh you can get into these nits and parallel gfti's like Assam University.

Here is the link for college predictor

https://engineering.careers360.com/jee-main-college-predictor?icn=QnA&ici=qna_answer