Company Secretary

CS is conducted by only ICSI institute in India.

Hi Kriti,
It will be difficult for you to seek admissions without mathematics. You should first check with the colleges. For computer sciences countries like US, Canada, Germany, Singapore, UK, etc. are very popular. Kindly, write to the colleges firstly for eligibility. You may refer to ranking tables like Times Higher Education for popular colleges globally.

You can pursue CS after completing class 12th. You need to qualify CS foundation exam. If you are a graduate then you don't need to take the CS foundation exam.

CS has a better scope as compared to CMA. The companies act has opened many new job opportunities for company secretaries. CMA is good too but not as good as CS.

If MBA in aviation is offered by MBA schools, I am not aware of that. But just comparing the above two, MBA in HR has better prospects since in aviation you are constraining yourself to one industry rather than a specific function.

Both the courses are good. As you have done B.Com honors, then you can pursue MBA in finance. Otherwise, CS is also a good option.

You can go for CS or LLB and you can study in USA. You cannot go for job directly.