Architecture

First try for NIT's. Go for NIT Raipur, MNIT Jaipur, NIT Patna or NIT Hamirpur. You'll most probably get a seat in one of these colleges. Else you can go for Chandigarh College of Architecture, Nirma University and there other institutes you can apply for. But I feel these options are sufficient enough for you.

Hi,
As per Council of Architecture (COA) admission guidelines, a candidate applying to any school / college of architecture in India should have achieved 40% score in NATA, i.e. at least 80/200, for consideration of admission into first year B.Arch programme.
So, you have not qualified. I think the results for NATA are going to appear only on June 10th. So you need to wait.
www.nata.in is the website for NATA.

Yes, you might get a government college. NIT will be difficult. Go for some regional engineering colleges. Or some state universities like Chandigarh college of Architecture, Nirma University amd similar other institutions that provide degree in B.arch.
Hope this was helpful.

Go for B.Arch as you have got a good rank. You can get a good NIT for B.Arch. But choose B.Arch only if you are interested in architecture.