Yeah, well, it is a heck of a lot more reactive than helium. True that.

There is actually no chemical energy change involved in refrigeration. Freon is a working fluid; it just changes phase in refrigeration. If there isn't any mistake in the MCQ, then my guess is the answer is none. The whole refrigeration cycle involves physical changes; at no step is breaking of bonds or formation of bonds involved (The subsequent energy changes being called chemical energy).