Architecture

Please refer to the link provided below for details regarding admissions for B.Arch in Sir JJ College of Architecture. Important details regarding eligibility, process and important dates are available for your perusal at the link mentioned below:
https://www.shiksha.com/college/sir-j-j-college-of-ar

Its rare in any college that architecture students get selected on campus. Same is with MANIT. You can't rely on campus placement. Yet MANIT architecture is one of the best available in country.

You need to qualify NATA National Aptitude Test for Architecture.

Please refer to the link provided below which contains colleges which offer architecture courses in Bangalore. Navigate to a college of your choice and download their brochure for more details.
https://www.shiksha.com/architecture-planning/colleges/colleges-bangalore

You should check with the admissions department of your institute for details regarding lateral shift to another college. Most likely, if you have a good academic record and there is a tie-up with your college and the target institute you should be able to shift without repeating an academic year.

As of now distance MBA from IGNOU offers only two courses which are:
1) Finance
2) Health Care and Hospital

There are over 200 architecture colleges in India. I have shared a link along with this post which you can use to explore the different architecture colleges in India and the courses they offer.
https://www.shiksha.com/architecture-planning/colleges/b-arch-colleges-india

For MS courses in Canada you need to write IELTS which is for English test and GRE test which is a prerequisite for almost all Universities to apply for.

You have completed post graduation degree in advance construction management so you are eligible for Ph.D course but you must have a valid UGC NET score.
NET stands for National Eligibility Test. The educational qualification required for NET exam is masters degree from a recognized university with a

The admission committee decides your admission on overall criteria of your previous academic performance, work experience, performance in design test, and performance in interview, portfolio and CEED scores, so yes, your scores in class 12th do matter. However, they consider the overall score of you