Nodejs exec for a C compiled binary displays stderr on stdout?

I have basically a C compiled binary wherein if an error is encountered during the execution, the error is dumped out to stderr. This C Binary is wrapped around NodeJS, where the binary is invoked via child process exec. But upon error, even though C code dumps out the information to stderr, I still seem to get the information in Nodejs on stdout, and not on stderr. So, essentially running console.log(stdout); dumps out the error information but console.log(stderr); dumps nothing. Does anyone have any idea on this, and if I need to redirect this information through a different medium so I get appropriate information on stdout and stderr on NodeJS script?