after completing my 12 from pcb , I choosen bba so can i join MNS now??

Hello aspirant!!

Candidates who have passed 12th with Physics, Biology (Botany & Zoology), Chemistry and English from a recognized Board with 50% Marks  and holding a degree certificate of   B.Sc.(Nursing)/PB(Post Basic) B.Sc. Nursing/M.Sc. Nursing are eligible to apply for Military Nursing Service .

Hello aspirant, hope you are doing good.

So, the eligibility for joining MNS is:

All the students who are aspiring to join, must have completed their class 12th board examination (12 years schooling) with physics, chemistry, biology and english with not less than 50% marks in the same, from a statutory/recognized examination body. Candidates who will be appearing for their final examinations in the same year might also apply provisionally, but at the time of admissions, they will have to show the necessary documents.

Hope this helps you. Good Luck !!