CBSE 12th

You will get a chance to give the exam in second year.

Hi Sneha,
Please state your subjects and stream. Are you from Arts, Science or Commerce? Also, mention your areas of interests to get better guidance.

Hi Rajendra,
Please clarify what you mean by sports side. Please mention your subjects, streams and areas of interest to get more appropriate advise.

Hi Subba, a number of options are open and you must decide what to study basis your own interests. Some options -
Engineering (B.E./B.Tech)
B.Sc. Degree ( Physics, Chemistry, Mathematics, Environmental Science,Education/ Teaching etc)
BCA
B.Arch
Integrated M.Sc.
Defence (Navy, Army, Air force)
Pilot Training
and so on.
Weigh your likes and dislikes and decide accordingly.

Yes, if it is a good university you should go for it. Always target the top universities for better prospects. Here is a link which you can check to find out about the best universities for hotel management:
http://www.thebestschools.org/rankings/best-hospitality-degree-programs/

Yes you can apply in IBS bangalore campus for that you have to give entrance exam IBSAT, CAT,MAT etc

Your percentage is not important for choosing a stream. It depends on your interest. If you want to start your own business, then opt for BBA or B.Com. If you are interested in technical or software jobs, then pursue B.Tech or BCA.

I can only suggest you to score above 85 percent marks in class 10th and after that opt for Diploma course. If you score good marks in Diploma, you can get admission in a good engineering college. If you want to continue your HSC education then score above 75 percent marks in PCM.