Challenging Science Test
Question 1 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 2 of 10
On account of an eerie sound it makes, what is another common name for the spotted hyena?
Question 3 of 10
Rapid eye movement and slow wave are two deep phases of what activity?
Question 4 of 10
Gingivitis is minor but can lead to the more serious periodontitis, affecting what body part?
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
Canadians would have been really impressed with the nine-foot-long Castoroides ohioensis. What was it?
Question 8 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 9 of 10
Sodium hydroxide is NaOH, also called caustic acid. And it's also called something else. What?
Question 10 of 10
Space rock that enters the Earth's atmosphere is known as a what?
Who Sang Quizzes
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Who sang these songs?
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Who Sang These Songs?
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Who sang these songs?
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Do you think you can name at least 6?
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Who Sang These Songs?
Can you answer these 10 music questions correctly?
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Which artist performed these songs?
Can you answer more than 4 questions correctly?
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History Quizzes
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History Quiz
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History Quiz
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10 Questions about History
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Across the Pond: UK & USA History Quiz
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History Questions
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History Quiz
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Geography Quizzes
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Play This Geography Quiz Now!
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HARD Science Quiz
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Geography Quiz
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Geography Quiz
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Geography Quiz
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10 Question About Planet Earth
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Music Quizzes
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Barbra Streisand Quiz
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Alternative Rock Music Quiz
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10 difficult questions about John Denver
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Science Quizzes
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Quiz on Science
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Average Score: 757% knows the answer to this question: "In WWII who flew around in a plane called Avalon, named for St George's lance? "
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How much do you know about food and beverages?
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Who sang these famous pop songs?
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Do you remember these old cities?