Dear Sarala, CBSE has preparwd a list of vourses that a student can opt for after 10+2. It is a 113 list of compendium. You can check the list at: http://cbse.nic.in/newsite/index.html
Apart from the list, excluding MBBS, BDS, BHMS, B.V.Sc, Ag.B.Sc, there are B.Pharmacy, B.Sc in Life Sciences, Psychology, Sociology, Physiotherapy, Occupational Therapy, Anaesthia technology, Radiology technician, Nursing among a wide variety of courses that you have a chance at.