IIIT

Yes, you may get a seat in NITs, IIITs with a good branch.
To get a list of all colleges according to your rank please refer to the link given below.
https://www.shiksha.com/b-tech/resources/jee-mains-college-predictor#&ui-state=dialog.
Upvote my answer if you got the information.

You have to qualify JEE Mains and Advanced exam and you also need to pass your HSC board exam with 75% then you have to attend the counselling for IIT College according to your rank.

Yes, you may get your state NIT by using your state quota but it is difficult for you to grab the other state NITs. In choice filling, keep your state NITs at the top.

Hello Kunal,
IIIT's are these days most sought after since software is considered as a sure bet for good placement. But as the number of seats is limited one need to have percentile above 80 to have some chance.

Hello Ankit,
As per your marks, its impossible for you to get any NITs or top reputed colleges, look forward to your other exams.
All the best.

Hello shivam,
Based on your rank, geeting an NIT might be very tough for you. So, start preparing for JEE Advanced. However, you may check your colleges related query on this.
College & Branch predictor : https://www.resonance.ac.in/reso/news/JEE-Main-Branch-Predictor.aspx
Rank predictor : https://www.resonance.ac.in/answer-key-solutions/JEE-Main/2017/jee-main-2017-rank-predictor.php

Hello Amit,
As there is no weightage of 12th marks, the students who didn't score well in boards but managed to score well in JEE is only beneficial, there will be not any major changes in cutoff of NITs, but as cutoff slashed by 19 marks from last year a score near about 150 -160 land you to a good nit's.
All the best.

Hello Bammidi,
As per your rank, you will not get any NITs, prepare well for JEE Advanced, you may get any IITs instead.
All the best