B.Arch

Reporting centre and allotted college is one and the same thing.

Yes, there are chances for your admission for B.Arch in JMI. Till then wait for the list.

No, you have to take NATA for doing architecture.

If you cross the limit of 70 marks, then you will be able to apply for architecture colleges.
You will definitely get any of the architecture colleges in India.
If you tell me your exact NATA score and class 12th marks, then I will be able to counsel your college and predict which college you might get.
If you like my answer, then raise your hand up by making an up vote.
All the best for your bright future.

Sorry to say but you will not get any college of architecture with 62 marks because 70 marks is the qualifying marks. But if you tell me your class 12th boards marks, then I will be able to help you more in the field if architecture.
If you like my answer, then raise your hand by making an up vote.
All the best for your bright future.

It's good that you scored 100 in NATA. But telling you simply that which college will offer you admission is quite difficult, as you have not mentioned the state to which you belong.
Moreover, the colleges which offer admission in B.Arch course publish their merit list or application procedure usually in the month of June/July every year, either in leading newspapers or their official website. Remain in touch with the official websites or colleges individual colleges.

You are qualified in terms of the percentage that you have scored in class 12th board. The eligibility criteria for students who want to study Bachelor of Architecture is very simple. Applicant must have completed Senior Secondary (10+2) with Mathematics and must have at least 55% marks. Applicant must be NATA qualified as well, and Applicant must have Proficiency in English communication. There will be an entrance exam conducted for all the eligible candidates also known as Sharda University Admission Test (SUAT). SUAT is compulsory for all the National Students. International Students Need Not give the Entrance Exam.