Puja, if this is regarding India Army B.Sc Nursing, then youshould have studied your 12th as a regular student from a recognised board/University or an Examinaton Body. You should have completed your 10+2 with Physics, Chemistry and Biology as your subjects. You should also have scored a minimum aggregate of 50% in your 12th. Now Bihar Board is a recognised State Boars. If you have studied your 12th from Bihar board as a regular student, then you are eligible for this course. But if you studied as a Private Candidate, then unfortunately you are not eligible.