CBSE 12th

Physics, chemistry, and biology.
Some institutes ask for maths also.
Good luck.

There are not so many colleges and universities who offer undergraduate course in travel and tourism, so it's better to choose a University which is good in this sector so i can suggest you Chandigarh University. There are many more also but as such in Delhi.

Yes, of course. This would be the best option for you.
Go for it. Study hard.
Good luck

Check out the link:
https://www.resonance.ac.in/reso/news/JEE-Main-Branch-Predictor.aspx

You are eligible to seek admission in BBA Airport Management.

If you have biology subject, you can go for medical apply for medical entrance exam. And, if you want to be engineer than apply for engineer entrance exam. Or else, you have many other option like:
B.Sc
BCS
BBM
BBA
B.Pharm
All the best for your future.

This year, may be cut-off will be down as CBSE will not give grace marks to any student. You can also go for that courses which cut-off is low such as B.Sc in mathematical science.

Software engineering degrees such as B.Tech CS/IT/SE or BCA or B.Sc CS/IT have compulsory basic course on Programming languages and data structures. Therefore, students who have not done any Programming language course in 10+2 stage are not in any disadvantage. However, it will be good that all student learn basic computers Science and at least one Programming language in their spare time during 10+2 stage.