Difficult Science Quiz
Question 1 of 10
On account of an eerie sound it makes, what is another common name for the spotted hyena?
Question 2 of 10
Joseph Wilbrand invented this in 1863 for use as a yellow dye. But in 1902, it was repurposed to blow stuff up. What is it?
Question 3 of 10
Gingivitis is minor but can lead to the more serious periodontitis, affecting what body part?
Question 4 of 10
Rapid eye movement and slow wave are two deep phases of what activity?
Question 5 of 10
In 1834, what tree's leaf became the official emblem of the St Jean Baptiste Society, now dedicated to Quebec independence instead of Canadian nationalism?
Question 6 of 10
What organ has an insula and four lobes (frontal, parietal, temporal and occipital)?
Question 7 of 10
What inventor used to make all employees write an "exceedingly simple" 150-question trivia test so tough even Albert Einstein failed it?
Question 8 of 10
Sodium hydroxide is NaOH, also called caustic acid. And it's also called something else. What?
Question 9 of 10
Canadians would have been really impressed with the nine-foot-long Castoroides ohioensis. What was it?
Question 10 of 10
Space rock that enters the Earth's atmosphere is known as a what?
History Quizzes
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10 Historical Trivia Questions
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10 Question About Planet Earth
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10 difficult questions about John Denver
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Quiz on music from the 1960s.
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Motown Legends: Can You Name the Artist Behind These Hits?
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Food Quiz
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General Knowledge Quiz
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10 Impossible Trivia Questions
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Lights, Camera, Quotes!
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Rewind to the 70s: Movie Quiz
Which of these have you seen in the cinema?
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Math Quiz
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10 Math Questions
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Everybody likes music, but how much do you know about it?
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Everybody likes music, but how much do you know about it?