B.Com

Production management is a specialized field of engineering. I will advise you not to pursue this specialization as it is not aligned with your commerce background.

Yes, you can pursue MBA in marketing. Marketing course is easy and can be learned with inputs of hard work + smart work. There is no such criteria that B.Com finance students can't go for marketing. There are immense opportunities after MBA-marketing.

Yes, you can go for MBA in airport management. You need to satisfy the minimum eligibility criteria of 50% in graduation.

Yes, it is completely possible. Although, very few colleges offer this niche course.

It depends on your interest. MBA, M.Com, MFA, MFM, LLB, etc. are some of the courses that one can pursue after completing B.Com.

With B.Com degree, you are eligible for PO and clerical jobs in public sector banks. You can take PO coaching to increase your chances to get job in public sector banks. Private sector banks prefers MBA for banking operations. In case, you are targeting private sector banks, you can do MBA preferably with finance as a specialization.

Yes, you can do it, if you have passed B.Com with 55% and given entrance exams for MCA.
For more details, you can visit the below mentioned link:
https://www.way2college.com/articles/mca/top-mca-colleges-india
All the best.

Yes, you can. But, there are limited options available. For MBA, normally work experience is required. MS management is better, if you want to apply for management programs without any work experience.