Hello there...

looks like there is some ambiguity in your question as you've not mentioned your details properly.

Now see if you'll score a decent marks and obtain a very good rank then surely you will get a seat in prestigious institutions like NITs/IIITs etc. also  you crossed 75% and top 20%tile criteria (which will not be considered this year) .

You can participate in Josaa counselling and you'll be alloted seat according to your rank in various categories (Gen,Gen-EWS,OBC,SC,ST etc).

Thanks ...

I hope it'll be helpful..