Divya, there are quite many courses after your 12th in Science Stream. But that also depends whether you have Mathematics or Biology as your Science subject. Except for MBBS and B.Tech there are courses like CA, CS which do not have any subject specifications, Then we also have Integrated Law courses and Integrated Science Courses that pay you good enough. CBSE has released a list of courses for each stream that each Candidate can pursue. You can check that list at: http://cbse.nic.in/newsite/attach/Compendium%20of%20Courses%20after%20+2.pdf . Alternatively, you can as well give us your science subjects and we shall help you with subject relevant information.