Hospitality Management

Hi,
You need to check this with the college once. As what matters is the 12th standard marks.
https://www.shiksha.com/hospitality-travel/hotel-hospitality-management/course/diploma-in-hotel-management-and-catering-technology-indian-institute-of-hospitality-and-management-thane-west-thane-151038

The eligibility depends on the type of course that you wish to pursue, the details of some courses is stated below:
Diploma Class 10th pass from a recognised board with minimum 40% marks. Bachelors Degree: Class 10+2 examination with at least 50% marks. Post-graduation degree: Bachelors degree from a recognised university with at least 45% marks.

I agree with Ritesh and also advice for UEM Kolkata to pursue hospitality management for good career prospects.

Yes, you can, but I would suggest you to do a side course along with your graduation or after graduation.

Yes, if you get a good job you should probably think about earning in Euros or Pounds, gain some international exposure and probably come back to India after developing a really strong profile. Best of Luck.