Candidates wishing to apply for Post Basic B.Sc. Nursing (P.B.B.Sc.) course need to have qualified the GNM (General Nursing and Midwifery) course after attaining the 10+2 or equivalent qualification, preferably with Science subjects.

Candidates need to also be Registered Nurse/ Registered Midwife or equivalent with any of the State Nursing Registration Councils.

So if you fulfil the criteria, then you're eligible for post b.sc nursing.