mam one more question is it necessary to do physics and chemistry again or only bio is enough to give exam for 12.. as i have done 12 with pcm soo clarify this
Vartika, you needn't study Physics and Chemistry once again. Your regular board marks will be considered. But because you did not study Biology in your 12th, you have to study Biology as an additional subject through NIOS. The marks scored in Physics and Chemistry through regular board and marks scored in Biology through NIOS will be considered to calculate your aggregate.