BBA

Well, the first thing I would like to tell you is BBA is a graduation course so you can go for it after your 12th and MBA is the post graduation course for that you have to complete your graduation first. BBA+MBA is the better chose nothing bad in that but make sure at least you have to do your MBA

http://www.bmsce.in/department/placement/list-companies-visited-campus-during-the-last-3-years
You can refer this link for the asked question.

BBA in Aviation is a 3-year full time undergraduate course, the eligibility for which is Higher Secondary Certificate (10+2) qualification from a recognized Board in the country with a minimum of 50% marks. The programme is spread over 3 years which divided into 6 semesters of 6 months each, with th

Get all the required information from the below link
https://www.google.com/url?sa=t&source=web&rct=j&url=https://www.shiksha.com/bba/articles/amp/top-10-bba-colleges-in-india-blogId-7797&ved=2ahUKEwixva7_m6PcAhUHNY8KHQbpAmMQFjAGegQIABAB&usg=AOvVaw0FD4-dYtjPS0O50CKBUf1_&cf=1.

Yes, you can apply. You need to apply in the international category.

If you're going for BBA, you're eligible to get admission in this college. But for B.Com, you're not eligible.
Good luck.

It's seems to be a little bit difficult as your score is 50 but it requires 55% for getting admission.