B.Arch

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.

The admission for B. Arch 2018 batch has already started you may apply for the same. It can be done on both the basis offline and online.
For eligibility criteria and other information you may go through the link below:
https://www-shiksha-com.cdn.ampproject.org/v/s/www.shiksha.com/architecture-planning/course/amp/b-arch-sir-j-j-college-of-architecture-mumbai-71170?amp_js_v=a1&_gsa=1&usqp=mq331AQCCAE=#amp_tf=From %1$s&share=https://www.shiksha.com/architecture-planning/course/amp/b-arch-sir-j-j-college-of-architecture-mumbai-71170#amp_tf=From %1$s

Sorry, but it's difficult.

Yes, you are eligible for admission in the above mentioned campus.This score in JEE and 90 above in board exams are more than enough for admission in this campus. Best of luck.

For a general candidate from another state, only spot round may get you to JMI.
Though the scenario may get easy for home state, Muslim, OBC and women students.
Still, you have got good marks, do not lose hope.

Total fee for B.Arch. at School of Architecture, Christ is mentioned below:
Total Fees:- INR 9.05 Lakh
(Fees Components : Tuition, Registration Fees)
For a detailed fee structure refer to the link provided below:
https://www.shiksha.com/architecture-planning/course/b-arch-school-of-architecture-christ-mysore-road-bangalore-290017

Average fees for this course in government colleges ranges from INR 1.5 to 2.5 Lacs and in private institutes, it ranges from approximately. INR 2.5 to 5 Lacs. Regards.

No, JMI offers diverse options to students from various castes to get admission. Moreover, being general and from a different state, you should score a minimum of 270 marks to choose your desired branch. Best of luck.