The slight address mismatch between your EWS certificate (permanent address - Delhi) and JEE form (Bihar address) is unlikely to lead to cancellation of your application.

JEE forms typically ask for a separate "correspondence address" where you can receive exam-related information. If your Bihar address in the JEE form is your current residence/correspondence address, it shouldn't be a major issue.

In some cases, there might be a verification process for EWS certificates. If this happens, you can explain the mismatch by mentioning your Bihar address as your current correspondence address for JEE purposes.If there is no verification process for EWS certificates, the address mismatch is even less likely to cause any problems.

I hope it helps!