B.Arch Eligibility

No, you would not get NIT Because
Eligibility For admissions to NITs/ IIITs/ GFTIs, candidates should have secured at least 75% marks in class 12th exam or be in the top 20 percentile in the class 12th exam conducted by the respective board. For SC/ ST candidates, the eligibility criteria is 65% marks in class XII.

Yes, with your JEE Mains paper 2 score, you can join this college provided you have qualified 10+2 norms of council of architecture.

Yes, subjected to qualification in NATA/IIT JEE part 2.

Yes, you are eligible. You may get Amity or Techno India or Om Dayal.

Hi,Yes, you are eligible, if NATA score is 102. Visit this link to check B.Arch colleges based upon your rank:
https://www.shiksha.com/b-tech/resources/jee-mains-college-predictor?utm_source=connect&utm_medium=CR_JEECP&utm_campaign=6919840
Then visit this link for various colleges which provides you brochure:
https://www.shiksha.com/architecture-planning/colleges/b-arch-colleges-india. Check the link below to get a list of approved Architectural Colleges. https://www.coa.gov.in/index1.php?lang=1&level=0&linkid=25&lid=26.

You could try for counselling but it would be quite difficult as MS University is one of the top institutions for architecture through NATA entrance examination. Your Boards percentage is quite low and you are not having state quota too.

No, there is no admission on the basis of merit because the basic eligibility for Bachelor of architecture is the candidate should clear NATA (National aptitude test in architecture) with the 80% marks conducted by Council of Architecture.

Yes, you are eligible.You can apply for a seat with this score.

She is eligible but we can expect only a tier-3 campus. She cannot join NITs or premium Institutes with this rank.