Architecture

Yes, you can apply for it. The various colleges /universities offering best masters are as follows.
IIT, Roorkee
Sir JJ Institute of Architecture, Mumbai
Jadavpur University, Kolkata
CEPT University, Ahmedabad
Jamia Millia Islamia University, New Delhi

Hello,
Hope you are doing well. It's quite tough to get NIT with 1853 OBC rank but there is a possibility you will get it because the ranks of NITs limits to 2000.
Hope for the best.
Do apply for B.Arch admission at NIT-Calicut.
All the best.

Hello,
Hope you doing well.
Here is the list of colleges you will get based on your JEE Mains paper 2 marks.
The M. S. University of Baroda- Department of Architecture
CEPT University-Faculty of Architecture
D. C. Patel School of Architecture (A. P. I. E. D. )
Laxmi Institute of Architecture, Sarigam, Valsad.
All the best.

Hello,
Hope you are doing well. Yes, definitely you can get the admission for B.Arch with these marks. You will get some government as well as good private colleges. Go for counselling and get the best college for this course.
All the best.

Hello,
Hope you are doing well. Yes, definitely you should go for B.Arch if you have interest in this because you secured very well marks and you. There is a chance that you will get government college as well. Go for counselling and get the best college with this marks. Only a few colleges will accept this marks if you had not appeared in NATA.
All the best.

Hello,
Hope you are doing well. Yes, definitely you are eligible for NITs with this ranking because generally, their cut-off rank lies in between 200 to 2000. So, you have satisfied the criteria and you are eligible to get an NIT for Architecture. Go and find the best NIT and get the admission.
All the best.

Hello,
Hope you are doing well. For general category, if you need admission in NIT-Calicut for B.Arch then you need to secure a rank between 496 to 1302 merit rank. For OBC, 543 to 1475 rank is required. For SC category, between 52 to 174. This is the same with state cut-off list. Other state candidate's cutoff may vary slightly.

Hello,
Hope you are doing well. No, there isn't any college which gives admission on the basis of 12th marks for architecture. Every college needs at least your appearance in NATA. NATA is a compulsory examination and also only a few colleges offer admission through JEE Mains paper 2. So, in order to get admission, you need to take NATA.