BBA

Hi Manu,
German universities require 13 years education prior pursuing the bachelor degree programs. If you are from India and completed 10+2, an additional year of formal schooling or college would be required.
You can complete the first year of bachelor degree in India and apply for the BBA degree in Germany. Besides, you must know German language and must also take the IELTS. You have to check the university websites for university specific information.

Highest placement package received for BBAs was 3 LPA in the last year. Apart from the placement the environment and others factors are good at MCC.

You can prefer Christ University, DY Patil-Mumbai, Bharatiya Vidya Bhavan-Delhi, etc.

For complete details check the web link as follows:
https://www.shiksha.com/bba/colleges/bba-colleges-kerala

Yes, you need to join in any management college that offer BBA programme in aviation. For complete details follow the link: https://www.shiksha.com/aviation/colleges/colleges-india

You can prefer Bharatiya Vidya Bhavan as first priority in Delhi, later LPU can be preferable which is very near to you.

Both BBA Marketing and BBA Finance are equally good educational qualificatio to seek admission in MIB or MBA IB. Based on any of the specialization at BBA you can choose your electives in PG degree on International Business.

Dear
You can check these options:
Delhi University
Symbiosis
Christ University
Xavier University
Mumbai University
Amity University
Ashoka University
IP University
Nirma University