Dear Raji, this is a very broad answer but mainly depends on the subjects that youbhave studied in your 10+2.

If you have studied Physics,Chemistry, Biology or Biotechnology, your options would be Bachelor's in Medicine, Dental, Agriculture, Genetics, Forensic Science, Micro Biology, Biotechnology, Biology, Acturial Sciences, etc. If your subjects have been Physics, Chemistry, Mathematics, then your options are B.E/B.Tech, BCA, B.Sc in Mathematics, B.Pharmacy, etc. Then you have CA, CS, BBA, B.Com, BA, Law Courses, Arts, Fine music, para medical courses. Its just that you need to chose your options that compliment your subjects with your interests.