Hello Aspirant

It is absolutely necessary to pass all your subjects in 12th grade, whether it is your 5th or 6th subject or it is any Board of Examination. It does not matter if you have good marks in all your other subjects, it is required for you to get at least passing marks in all your subjects in order to receive your Pass Certificate. The board offered you a 6th subject for you to have an option for your bachelor's degree. You need to obtain at least passing marks in all your 6 subjects.