Trending @Infosys; If we work on rfp proposal then is there any chance we will get onsite opportunity in infosys?

You will get very good visibility if you are doing good work in RFp and helping in winning something. Once you get visibility and establish your credentials you can start asking things and management will agree.

No, I don't think any direct correlation can be made between working on RFPs and getting onsite opportunities. It will add another point in your resume though.