MBA/PGDM

Yes, there are a lot of placement opportunities if you do BDS graduates with a British MBA.

You could opt either for BBA from colleges which offer great placements which will help in getting a good salaried job, please visit the link for more details :
https://www.shiksha.com/bba/ranking/top-bba-colleges-in-india/93-2-0-0-0
If you are interested in B.Com you could also enter in good colleges but the salary offered wouldn't be as much as of a BBA student also one could go for BMS which offers a better exposure than B.Com.

https://www.shiksha.com/mba/colleges/mba-colleges-india?rf=searchWidget&sp[]=272&sp[]=273&sp[]=274&sp[]=275&sp[]=276&sp[]=277&sp[]=252&sp[]=271
Please find the good MBA colleges. Global MBA courses are available in most of the colleges and the courses last upto 1-2years.

Dear aspirant
It's great connecting with you. Unitedworld School Of Business is among the top B Schools in Kolkata with not only excellent placement records but with the course curriculum in itself is very extensive. The curriculum is designed in a way to cover all aspects of business management, providing students with multi-faceted knowledge in all areas of management while ensuring they gain expertise and specialize in their chosen field of discipline of management.

Kindly see the below link for information related to your query.
https://www.shiksha.com/college/jai-bharath-arts-and-science-college-kochi-72407/course-master-of-business-administration-mba-438435

That's great. You can go for CAT exam and get a good college.

100% scholarship you can get only for tuition fee I think. Not for everything.

Your academics are good. You'll get a good college but if you want best college then go for CAT/GMAT/GRE.

Stanford Graduate School of Business
Harvard Business School
Instead
University of Pennsylvania: Wharton
CEIBS
London Business School
University of Chicago: Booth
MIT: Sloan
Columbia Business School
University of California at Berkeley: Haas
Yale School of Management
EM-LYON (Early Makers Lyon) Business School, Paris
IESE Business School
University of Oxford: Said
Northwestern University: Kellogg
Dartmouth College: Tuck
University of Cambridge: Judge
National University of Singapore Business School
HKUST Business School
HEC Paris
Duke University.