B.Arch

Hi Gokul,
The best he can do is to collect the admission form, which to the best of my knowledge are distributed only on campus. The forms for management quota (which might be his best bet) gets sold out very quickly. Therefore, now he must contact the college by phone and find out the exact dates.
All the best!

Yes, NATA examination is compulsory for getting a seat in B.Arch.
To get all the detailed information, visit the below mentioned Shiksha's link:
https://www.shiksha.com/architecture-planning/course/b-arch-thiagarajar-college-of-engineering-madurai-203375

The minimum score of 80/200 is required for you to take up Architecture course, anywhere between 100-120 may get you a seat, depends on the higher ranks submitted.

No, no such institution or university exists where you can get a B.Arch through distance education. Regards.

Below is the list of best B.Arch colleges in Tamil Nadu:
Sathyabama Institute of Science and Technology, Chennai
BS Abdur Rahman Crescent Institute of Science and Technology, Chennai
Thiagarajar College of Engineering, [TCE] Madurai
Mohamed Sathak Engineering College, Ramanathapuram

You need to give NATA exam to take admission for B.Arch.

Yes, it accepts 10% of its total seats from JEE paper 2. And, also if there are some seats left after all the admission process, they will increase the number of seats under JEE also, and you can easily get admission in this college at this score.

Admission is through counselling conducted by Directorate of Technical Education, Maharashtra based on marks obtained in 10+2/ Diploma and score obtained in National Aptitude Test in Architecture(NATA).
Selection parameter and weightages:
10+2/ Diploma marks - 50%
NATA score - 50%
https://www.shiksha.com/architecture-planning/course/b-arch-sir-j-j-college-of-architecture-mumbai-71170

Please visit this site first
https://www.google.com/url?sa=t&source=web&rct=j&url=https://www.shiksha.com/b-tech/resources/jee-mains-college-predictor&ved=2ahUKEwjd0NzModzhAhUZfSsKHfLtA6UQFjAAegQIBBAB&usg=AOvVaw1N9BzFtyUCP4JU-2UQHQ0H.

Please visit this site first
https://www.google.com/url?sa=t&source=web&rct=j&url=https://www.shiksha.com/b-tech/resources/jee-mains-college-predictor&ved=2ahUKEwjd0NzModzhAhUZfSsKHfLtA6UQFjAAegQIBBAB&usg=AOvVaw1N9BzFtyUCP4JU-2UQHQ0H.