Science

MBA in Biotechnology is not the course that is offered.
If you intend to go to the business line, go for strategic management as per your profile.
Good luck.

Being the alumnus of T S Chanakya, I can tell you that the admission procedure in B.Sc in nautical science is based on your IIT-JEE marks. TS Chanakya does not take its separate exam. Talking about the medical examinations of your body, your eyesight must be 6/6. You have to go through a whole body check up including your genitals. Any special muscle strength or muscle size is not required. Overweight/Underweight is not a matter of concern. If you are completely fit and have good IIT-JEE score you can become the part of the eminent training institution. Best of luck!

No, you can't. Sorry.

Yes, you can go for the animation course. You can join a Diploma course.
Here is a list of probable job roles in animation: 2 D Animator, 3 D Animator, Key Frame Animator, Image Editor, Modeler, Character Animator, Texture Artist, Story Board Artist and many more.