hey,

the bsc post basic or post basic bsc (P.B.B) is  a nursing course which is of 2 years which helps  professionals orthe ones who have already a background in nursuing or in a similar field ,the basic eligibilty criteria is aspirant must have cleared their 10+2 from recognised board and he/she also completed the GNM course.

bsc general is a 3 years of graduation degree in which you have to deal with the basic subjects like PCM OR PCB ,it requires students must be passed 10+2 from any recognised broad.

good luck!