Which are the courses I can pursue in graduation after opting PCB in my intermediate?

That's exactly what I think is the best thing about going for science branch. You can switch to whatever other branches if you would like. Like you can opt for commerce, arts. Regarding options in the science premises itself, you have agriculture, biotechnology, botany, forestry, pisciculture and wh

Hi You may choose computer science, maths, Biotechnology etc as optional subject and to read about the different careers possible in pure sciences, paramedical etc, check this link. http://mohansodha.blogspot.in/p/list-of-different-career-courses-after.html?m=1