Hello aspirant

I think you are totally unaware regarding jee so first of all let me clarify you.

For getting admission in IIT,NITs,IIITs, you have to give jee mains exam and after this if you are selected you can give jee advance .After this year total seats in IITs are nearly 12-13k and if you are under this rank then you can grab the chance of getting admission in any IIT depending on your rank.If you have decent rank JEE main then you can get any NITs or IIITS also.

Hope it helps!!

Thanks