Utkal University

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.
Bachelor's Degree: Class 10+2 examination with at least 50% marks.
Post-graduation degree: Bachelor's degree from a recognised university with at least 45% marks.
Graduate & PG programs may also require you to appear in entrance exams such as NCHMCT,AIMA UGAT, E-CHAT etc.

Alliance School of Business, Alliance University
SOA University
MIT School of Management(MIT-SOM)
Mother Teresa Women's University
National Institute of Business Management

The best government Institutes for Tourism:
Indian Institute of Tourism and Travel Management (IITTM)
Pondicherry University, Pondicherry-605014
School of Vocational Studies, Delhi University, New Delhi-110049
Kurukshetra University, Kurukshetra-136119
In Government sector, candidates can find job opportunities in department and directorate of tourism and since the industry is at its developing stage, a huge number of fresh hands are required in this industry.

Possibilities are there in any field but it is always better to go for placement here in India,. get experience then apply abroad

Graduation is not a requirement for a diploma, but at time of placement it is quite important

No, UG courses are also available in Travel & Tourism. You can pursue a BBA course in Travel & Tourism. Hindustan University, University of Technology & Management Shillong & Maharaja Surajmal Institute are a few institutes offering BBA in Travel & Tourism. You can check further details on websites of these institutes.

Sales, Account management, Online marketing, are some of good profiles.
https://www.shiksha.com/mba/course/mba-aviation-travel-tourism-management-institute-logistics-aviation-management-mumbai/198518

Dear Rishabh,
You may join a travel journalism course from the below-mentioned colleges:
https://www.way2college.com/articles/journalism/topjournalismcollegesinindia