I have just 48% in 12th and had got admitted in RVCE CSE through management quota. Will I get placed if I perform well here?

Definitely , your PU score doesn’t matter here , if your still afraid of your basic maths, Chem or physics skills , they hardly matter in engineering . No you don’t have to be good at calculus or any complex mathematical part of PUC , that it is not at all a nessesity for placements. If you could love coding once u start learning it, you will be fine . So ya no pre requisites , have a good life at RV 🙂