2nd one: "baka", and for "shiranai", if she's talking to someone that's not the one she calls idiot , then maybe it's something like "I don't know that person(that idiot)", if she's talking to the idiot , then maybe it's something like "I don't know that(whatever "that"is)"
4th and 5th, "baka"
Updated
Your Wife Calling You "Idiot" using Different ExpressionsMad For RealScandalizedBlushingCryingSmilingYou sure are a big fool aren't you?