NIT

Hi,
Just go through this link and fill out the required details
College predictor in Shiksha
https://www.shiksha.com/college-predictor

I think, you require minimum 85 percentile for top NITs and for IITs first of all you have to crack JEE advance.

The following are the best colleges in Tamilnadu for B.Arch course.
1. Thiagarajar College of Engineering, Madurai
2. Periyar Maniammai Institute of Science & Technology, Thanjavur
3. SRMIST, Chennai
4. VIT, Vellore
5. Bharath Institute of Higher Education and Research, Chennai.

All IITs and NITs are the best because these are the these are governed by the Institutes of Technology Act, 1961 and National Institutes of Technology Act, 2007 respectively and declared as the institutions of national importance.
The admission procedure and placement statistics of IITs and NITs are at top with respect to any other Institutes.

Your expected JEE Main AIR is below 148513. The last year closing the highest closing rank in NITs was 40051 in Civil engineering at NIT Agartala. Hence, your chances for admission are moderate in an asked category if continued the last year of trends.

I suggest you go for checking of rank list of college In architecture stream on Shiksha website and then fill. Firstly, go through with all fact in every college. It help you lot of in choice filling. Best of luck.

Yes, there is possible chance that you will get seat on the basis of the home quota and SC category.

Kindly visit this link
https://www.shiksha.com/college-predictor.