Architecture

No, you need atleast a rank under 1200 for a seat in even second round for that.

There are very few seats for general in both the colleges. Also, in NIT, minimum board percentage should be 75%, so you will not get NIT.
For Sir JJ, the admissions are through 50% board + 50% your competitive scores. Your board percentage seems less, so the chances are very thin.

Center for Environmental Planning and Technology University, Ahmedabad
Chandigarh College of ArchitectureJamia Milia Islamia UniversityManipal UniversityNIT Trichy
BIT Mesra
Jadavpur University
Sir JJ College of Architecture Mumbai
Above are some best recommendations for you.

You can check on the given link. It will be helpful to you. You have scored good marks. You have chances of getting any IIIT or NIT. I am not sure exactly which college you can get so kindly check on the given link. Please use the filter option also:
https://www.shiksha.com/b-tech/resources/jee-mains-college-predictor

https://www.shiksha.com/b-tech/resources/jee-mains-college-predictor
Yes, you are getting the IIT Roorkee and IIT Kharagpur.

You might not get as there are very less government colleges for architecture. You can get into good private universities for pursuing B.Arch. I would suggest you to try:
https://www.shiksha.com/b-tech/resources/jee-mains-college-predictor
To get a brief of what you can expect with these marks, Manipal and Jaypee College are some recommendations.

I am predicting this as your general rank. Yes, you can get NITs and IIITs too.

Hi there,
As per the website, there is no B.Arch in NIT Srinagar.

Hi,
These are some of the colleges that you can apply for through JEE Mains Paper 2 result:
1. SPA Delhi
2. SPA Bhopal
3. SPA Vijayawada
4. BIT Mesra
5. Jamai Milia Islamia University, New Delhi
6. NIT Tiruchirappalli
7. NIT Raipur
8. NIT Jaipur

Hi,
Kindly Google in the previous year opening and closing rank of B.Arch programme of various NITs. You will get a rough idea of which colleges you can apply for and what are your chances.