B.Sc

Dear Ashish,
You will not be able to pursue degree course if you wish you go for a one year course. You may pursue PG diploma in computer Science.

A pass B.Sc + B.ed can take u to teaching.
B.Sc hons + m.Sc can lead either to research or professor ship.
B.Sc + MBA will get u jobs in corporate sector.

Tourism management focuses on tourism development, management of the travel industry, tourism marketing, and tourism services While Hotel/Hospitality management is a field that focuses on all areas of hospitality operations including hotels, restaurants, cruise ships, amusement parks, country clubs, and convention centres .Some Good Colleges are listed:
- IHM- Mumbai.
- IHM- Delhi.
- Indian Institute of Hospitality & Management- Thane.
- Rizvi College of Hotel Management- Mumbai
- IHM- Meerut, and many more institutes.

Yes you can surely become a software engineering but to get a job in software field you got to have software degree and since Bachelors is already completed so you need to have a Masters degree in software with a little experience in software field. All the best

Kindly, mention the branch of your B.Sc.

You haven't done MBBS or BDS. So you aren't eligible for appearing MD MS examination. As you have done B.Sc, you can go for M.Sc.
All the best. Feel free to revert.

BCA is better than B.Sc. because there are many career opportunities in it . You will get very good job after BCA because computer is used in every field and computer specialists are in great demand now a days. After BCA , you can make your career in banking, and also many companies are taking BCA graduates or you can do MCA and after MCA, there are so many career options.
I hope my answer will help you.
Best of luck for your future.