Jons Jacob Berzelius not only identified silicon, selenium, thorium and cerium, he also developed what system?
It's used to make computer chips, but add an E and you have R2SiO, a polymer with which Pamela Anderson is well acquainted. What is it?
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Difficult History Test
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History questions that present a challenge.
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History Test
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History Knowledge Test
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History Quiz That Pushes Your Limits
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"The July Revolution of 1830 toppled Charles X in favor of Louis-Philippe. Where?
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You think you know your History?
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History Test
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History Quiz
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History Quiz
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Geography Quiz
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Have you ever been to Japan?
HARD Geography Quiz
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Geography Quiz
10 questions most people will struggle with
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Challenging Geography Quiz
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Challenging Geography Quiz
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Geography quiz. Level Impossible.
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Only an Aussie can score a perfect 10 in this quiz!
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HARD Geography Quiz
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Are you smarter than this geographer?
Geography Quiz
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Very Hard Music Quiz
10 Questions
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Music Quiz
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Music Quiz For Intelligent People
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Think you know your Beatles from your Stones?
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New Music Trivia
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Challenging Music Quiz
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Challenging Music Quiz
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Challenging Music Quiz
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Music Quiz
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Are you a Science Expert?
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Don't bother beating my score
Science Quiz
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HARD Science Quiz
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Science Quiz
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Play This Science Quiz
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Are you a scientist?
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Mad Science Quiz
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Nobody can score a perfect 10
Quiz for Scientists
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Hard Science Quiz
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Who Sang These Songs From The 70s?
10 hard questions
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Who Sang These Disco Songs
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Who Sang These Songs?
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Who Sang These Songs?
No one knows more than 5 songs in this quiz!
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Who Sang These Songs?
Did you know these songs?
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60's music quiz
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Who Sang These Songs?
Try scoring at least a 7. It's very hard!
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Who Sang These Country Songs?
Who is able to recognize all 10 country songs?
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60's music quiz
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Challenging Food & Beverages Quiz
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Unknown Fruit Quiz
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10 fun questions about food you probably can't answer
Food Quiz
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Challenging Food Quiz
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Test Your Culinary Knowledge with this Delicious Quiz
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Food & Beverages Quiz
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Challenging Food Quiz
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Food & Beverages Quiz
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Food and Beverage Quiz
10 questions but you won't get them all correctly!
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Trivia Quiz For Geniuses
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Difficult Knowledge Test
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Do you know from at least 6 songs who sang them?
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Extreme Hard Test
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Show us you can do better than we think!
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Unbeatable Knowledge Quiz
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Fun Quiz For The Brain
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Unbeatable Knowledge Quiz
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Absolutely no one scores a 6 or higher
Difficult Mixed Trivia Questions
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Literature Quiz
How much knowledge have you stored in you brain about Literature?
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"What word means to award compensation to?
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Literature Test
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Literature Quiz
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Literature Quiz
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Tell us, what do you really know about literature?
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It's highly doubtful you can complete even half of these movie titles in this quiz.
Movie Quiz
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"One Flew Over the Cuckoo's "..." (1975)
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10 Hard Movie Questions
What is the last movie you have seen?
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"Which film star is married to Goldie Hawn?
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how often do you go to the movie theater?
Movie Quiz
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"Marilyn Monroe starred in which of these classic movies?
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Crazy Quiz About Movies!
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Movie Quiz Challenge
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Movie Quiz
What movie has your best memory?
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Only 10% can complete all 10 of these movie titles
Movie Title Quiz
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"Planet of the …..
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Movie Quiz
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We bet you can't even finish half of these movie titles in this quiz
Movie Quiz
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" The Lord of the "...." (2003)
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SUDDEN DEATH QUIZ
Try to stay on your feet!
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Mathematics Quiz
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Math Quiz
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Math Quiz
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Can you solve this?
go to Math Quiz
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Math Quiz
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"How many feet long is a 100-yard football field?
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Math Quiz
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Unbeatable Math Quiz
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Mathematics Quiz
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"How many CD racks does it take to hold 300 CDs if each rack holds 75 CDs?
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