Science

Individuals interested in joining the navy right out of school will have to go through the following levels:
1) Written exam
2) Physical test
3) Medical test
Please refer to the link provided below for details on selection procedures for candidates interested in joining the Indian Navy:
https://www.shiksha.com/careers/naval-officer-82

In IELTS each module must have 5.5 band and not less than 5 band to study in Canada. If you have no gap more than 2 years, you are eligible for the best university in Canada. You have 7 bands, I think this is the best score to enter in the university to study MS courses.

You can replace mathematics by computer science.

There is no policy which forbids anybodyto pursue diploma, UG and PG courses in Geology after B.Tech. You can do any studies after Engineering degree as per your interests subject to meeting eligibilty criteria of planned studies.

You can not two formal degree simultaneously from same or different universities as it is allowed by UGC guidelines on subject.

Dear Anshul,
When you speak about IIM then definitely it will be a respectful and rewarding career. As far as your package is concerned, I personally believe that you should first complete your graduation. Keep your scorecard excellent in the entire process. It is because your excellent scorecard will keep you ahead of others. The package actually depends on your negotiating capability with the employer at the time of interview. So, first be focused on your studies. I hope this would suffice. All the best and God bless you.

I will suggest you to join M.Sc in Clinical research as India have thousands of Pharma companies where they need M.Sc clinical reps. Management is not a good option. I think because of big flow of students for it.Top companies like
Ranbaxy
Dr.Reddy's Laboratory
Johnson and Johnson
Cipla, etc.