Your question number 3 has no correct answer. You are asking something with no definitive answer or proof. It's abstract. How do you figure that would even be score-able as a question / answer pair?
Your answer for 4 is incorrect. George Washington was the first president of the United States of America.
John Hanson was the president of the Continental Congress, which was the transitional governmental power during the American Revolution. The position really didn't have any powers or assigned responsibilities. Furthermore the United States were not the "United States of America" prior to John Hanson, it was merely a collection of 13 British colonies under a congress.
Then since you want to get asinine with your questions and answers, question 5's answer is also incomplete / incorrect. "Towards the center" of what? Down is also a relative descriptor in context to the orientation of the user or observer. Someone occupying the southern hemisphere is not going to hurl off into space if the Earths gravitational force acted "down" simply because down to you is a perceived direction. Down for someone in the southern hemisphere is relatively and usually, downward towards the ground. This makes your answer of "Towards the center" just as ambiguous and relative. Towards the center of what? The moon? Well there are certainly gravitational forces in play that act on objects that act towards the center of that. The center of the what exactly? And if you want to claim the Earth, you might want to bone up on that as well as gravity is not a force that acts towards the exact center of the Earth either.
That was enough blatant misinformation to discredit pretty much everything else about your little quiz. It was sloppy at best.