NIT

I have doubts Manab that you will get into a NIT with these marks. You need to keep trying in other colleges as well.

It is near to impossible.

U can get probably

Hi Naman,
With these marks you can surly get admission in some of the NITs.
Not only will you get NITs but with this good score in 12th and JEE score you can also get a seat in some of the best private universities that are offering admissions both on the basis of JEE score and 12th marks. Some of the universities also offer scholarships on the basis of above mentioned criteria.
Check their websites for more details.
Good luck.

you should have mentioned Your catagory.The chances of landing into NIT are fair only if u belong to SC ST catagory otherwise its difficult.

yes you can. there is a chance to get seat in iiit

Admission in IITs and NITs is done through JoSAA counseling.

JEE Mains score ?

IITs are good