Hello Rahul.
That's a very good question.In India mostly people choose between engineering and medical,even though there are a lot of good courses out there.well the very first course which comes to our mind other than engineering and medical is CA.It is one of the best course to go for,or else you can even choose b.com honours which has immense scope.

There are many courses with scope other than medical and engineering.You can study b.sc physics hons,b.sc chemistry hons in one of the best colleges.You can opt for a subject to study at IISC bangalore.You can go for research in some of the research colleges also.