[devsda]

One of the questions was about an element in the periodic table and I got to study periodic table in 8th or 9th grade.

So, apart from the obvious questions about American history I think getting them right also depends on the country you're from.

That said, a reasonably educated adult should be able to answer most of them excluding the country specific questions like unit conversion, history & constitution.

[BrandoElFollito]

I am a reasonably educated adult (at least I believe so) and I did not know what the constitution of a string quartet is.

[devsda]

To me that question falls into the country specific category.

I just assumed it's an American thing to learn about western musical instruments at school.