2 different Hz monitors works together?

Good day guys, just wondering can 2 different Hz, 120hz and a 60hz monitors work together on a same graphic card, a split screen function for windows 7?

They should, you might just have to change the 120Hz monitor to 60Hz to make them work together. I'm not sure about that, just a guess, but I don't know of any reason why they wouldn't work together.

If you're running two monitors, they will be required to run at the same refresh rate.  Therefore, both of your monitors would be stuck at 60Hz