CBSE 12th

Yes, you can apply for the foundation course.

You need to clear the entrance exam to get admission to AU.

Hi. For information, you can see below link
https://www.shiksha.com/college/loyola-college-nungambakkam-Chennai-1108/course-b-sc-in-physics-82607
Thanks.

Hello Upasna, this course isn't available in CJSM.

Hi, the percentages vary with different courses and different categories. You can view the cut off list here-
https://moderncoe.edu.in/cut-off-marks.aspx

Hi, both the colleges consider your 12th standard result.

Greetings, You should choose the course, in which your interest lies. If you are passionate about something, you must try to convince your parents. Talking about BMS is a good field to make your career. The most important eligibility criteria for the BMS course is that the candidate should have passed his class 12 or equivalent examination from a recognized board or university. The minimum aggregate required to pursue a Bachelor of Management Studies, BMS course is 45% for general category students.

https://www.shiksha.com/engineering/articles/mht-cet-eligibility-criteria-blogId-54593
Get all the information here.

Instead of taking admission in School for regular study of 12th PCM, you have to opt for NIOS or as a private student for clearing PCM papers. The school will give you admission on the basis of the 10th mark sheet but you have to justify the reason for the gap instead of saying about 12th Arts.

12th PCM students are not eligible for NEET. You have to clear the Biology paper from NIOS or other boards for NEET eligibility.