Most of the oxygen in the air is produced by what chemical process?
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Question 2 of 10
Which of these devices would you most likely use to listen to music?
Question 3 of 10
Alfred J Gross invented this for doctors, who didn't like it, although the last people to use it were hospital doctors. Mind you, the tech behind it also powers garage openers. What is it?
Question 4 of 10
Which space probe landed on Mars in June 1999?
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Question 5 of 10
What country shares its name with an ink that is chemically inert, not affected by sunlight and virtually permanent?
Question 6 of 10
At 11:38 a.m., on January 28, 1986, just 74 seconds into its 10th mission, an O-ring ruptured, setting off a fiery explosion in the main fuel tank of which space shuttle?
Question 7 of 10
What happens to the pressure of water as depth under the water increases?
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Question 8 of 10
The grandfather paradox is held up as one of the risks of what improbable science fiction activity?
Question 9 of 10
Water freezes at what temperature?
Question 10 of 10
Wood's glass, which blocks most wavelengths of light, was originally used to encode messages. What kind of light does it let through?
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History Quizzes
History Trivia Quiz
Scoring higher than a 6 is impossible!
Average Score: 9
0% knows the answer to this question:
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History Test
Can you score a 6 or better?
Average Score: 8
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History Sudden End Quiz
Who is able to make it to the end?
Average Score: 0
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History Quiz
Are you a Historian?
Average Score: 8
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History Quiz
Wil you stand a chance?
Average Score: 8
0% knows the answer to this question:
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Quiz About History
You will never score higher than a 6
Average Score: 7
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Quiz about History
How many retries did you need?
Average Score: 7
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Elementary School History Quiz
We wish you good luck with this quiz!
Average Score: 8
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History Quiz
Please share your score no matter how low or high
Average Score: 6
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Geography Quizzes
What was your last travel destination?
HARD Geography Quiz
Average Score: 6
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Quiz on Geography
Good luck making this fun quiz!
Average Score: 9
0% knows the answer to this question:
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10 Geography Questions
How many did you answer correctly?
Average Score: 9
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Hard Geography Quiz
You won't score a 6 or higher!
Average Score: 9
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Play This Geography Quiz Now!
It's going to be impossible to score a 6+
Average Score: 6
0% knows the answer to this question:
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Challenging Geography Quiz
We hope you can handle this quiz!
Average Score: 9
0% knows the answer to this question:
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Geography Quiz
You won't score a 6 or higher!
Average Score: 6
0% knows the answer to this question:
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Challenging Geography Quiz
We hope you can handle this quiz!
Average Score: 8
0% knows the answer to this question:
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Only an Aussie can score a perfect 10 in this quiz!
Play Now
Average Score: 8
0% knows the answer to this question:
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Music Quizzes
Music Quiz
Can you do better than a 5 out of 10?
Average Score: 9
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Play Music Quiz
We bet you're not a musician!
Average Score: 9
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Quiz about Music
Only real music fans score a decent 7+
Average Score: 9
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How often do you listen to music?
HARD Music Quiz
Average Score: 7
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Play this music quiz by clicking here
And tell us what you scored. We hope you did good!
Average Score: 9
0% knows the answer to this question:
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Challenging Music Quiz
We challenge you to score a 7+
Average Score: 7
0% knows the answer to this question:
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Music Quiz For Intelligent People
Are you smart enough?
Average Score: 7
0% knows the answer to this question:
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10 difficult questions about John Denver
Let us know your score in the comments
Average Score: 7
0% knows the answer to this question:
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How often do you listen to music?
HARD Music Quiz
Average Score: 7
0% knows the answer to this question:
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Science Quizzes
Don't bother beating my score
Science Quiz
Average Score: 7
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Most people can't even score 5 out of 10 in this science quiz
Play Science Quiz
Average Score: 9
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Play This Science Quiz
Only for quizzers with an high IQ
Average Score: 9
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Quiz For Scientists
Have you ever entered a science fair?
Average Score: 9
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HARD Science Quiz
Who can beat the average score?
Average Score: 8
0% knows the answer to this question:
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HARD Science Quiz
We hope you're smart enough to score a 7+
Average Score: 6
0% knows the answer to this question:
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Are you a scientist?
Proof by beating her score!
Average Score: 7
0% knows the answer to this question:
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Try scoring a 10 out of 10
10 HARD Science Questions
Average Score: 7
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Mad Science Quiz
Can you do better than a 7?
Average Score: 8
0% knows the answer to this question:
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Who Sang Quizzes
Who Sang These Songs?
You'll never ever score higher than a 6
Average Score: 6
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Who Sang These Songs?
Try scoring at least a 7. It's very hard!
Average Score: 10
0% knows the answer to this question:
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Who Sang These Country Songs?
Who is able to recognize all 10 country songs?
Average Score: 9
0% knows the answer to this question:
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Who Sang These Songs?
How many songs did you know?
Average Score: 6
0% knows the answer to this question:
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Do You Know Who Sang These Songs?
Try scoring a 6+
Average Score: 8
0% knows the answer to this question:
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Who sang the famous song "Hey Jude" (1968) ?
If you know the answer, make sure you check out this quiz, you might score a perfect 10
Average Score: 9
0% knows the answer to this question:
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60's music quiz
You won't score a perfect 10
Average Score: 8
0% knows the answer to this question:
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60s music quiz
You won't score a perfect 10
Average Score: 8
0% knows the answer to this question:
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Who sang these songs?
10 song questions
Average Score: 9
0% knows the answer to this question:
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Food & Beverage Quizzes
Food & Beverages Quiz
We challenge you to score higher than a lousy 5
Average Score: 8
0% knows the answer to this question:
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Food and Beverage Quiz
10 questions but you won't get them all correctly!
Average Score: 9
0% knows the answer to this question:
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Challenging Food Quiz
10 HARD questions about food & beverages
Average Score: 6
0% knows the answer to this question:
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Food and Beverage Quiz
Who is able to score higher than a lousy 4? Share if you did
Average Score: 9
0% knows the answer to this question:
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Food and Beverage Quiz
10 questions but you won't get them all correctly!
Average Score: 9
0% knows the answer to this question:
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Unknown Fruit Quiz
No one scores a 6 or more in this unknown fruit quiz!
Average Score: 7
0% knows the answer to this question:
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Challenging Food & Beverages Quiz
We challenge you to beat his score!
Average Score: 8
0% knows the answer to this question:
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General Knowledge Quizzes
Imposible Mixed Trivia Questions
Who is able to score better than a 6?
Average Score: 8
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General Knowledge Quiz
Can you do better than a 5 out of 10?
Average Score: 9
0% knows the answer to this question:
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General Knowledge Trivia
We bet you can't score higher than a 5
Average Score: 6
0% knows the answer to this question:
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Mixed Knowledge Trivia
Ready? Set! Play!
Average Score: 8
0% knows the answer to this question:
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Mixed Questions Quiz
Can you score a 6+?
Average Score: 9
0% knows the answer to this question:
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Can you answer question 7 correctly?
Dare to try this mixed quiz?
Average Score: 8
0% knows the answer to this question:
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Quiz with a mix of trivia.
10 extremely hard questions
Average Score: 9
0% knows the answer to this question:
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We have 10 Knowledge Questions for you!
Are you above average? Prove us!
Average Score: 8
0% knows the answer to this question:
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You are eliminated after question 7
Trivia Knockout
Average Score: 0
0% knows the answer to this question:
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Literature Quizzes
Literature Quiz
Who of our quizzers can get a perfect 10? Share below!
Average Score: 8
0% knows the answer to this question:
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Literature Test
What did you score? Share below if you dare!
Average Score: 8
0% knows the answer to this question:
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Movie Quizzes
Lights, Camera, Quotes!
Who can get a perfect 10? Share if you did!
Average Score: 8
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It's highly doubtful you can complete even half of these movie titles in this quiz.
Movie Quiz
Average Score: 9
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Crazy Quiz About Movies!
Nobody will be able to score a 7+
Average Score: 9
0% knows the answer to this question:
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Movie Quiz
Can you score perfect 10?
Average Score: 6
0% knows the answer to this question:
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Movie Quiz
What movie has your best memory?
Average Score: 8
0% knows the answer to this question:
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HARD Movie Quiz
Enjoy and share your score below in the comments
Average Score: 6
0% knows the answer to this question:
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We bet you can't even finish half of these movie titles in this quiz
Movie Quiz
Average Score: 10
0% knows the answer to this question:
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Movies: 10 Daunting Questions
We hope you have watched enough movies
Average Score: 9
0% knows the answer to this question:
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Math Quizzes
Mathematics Quiz
Are you a real mastermind in mathematics?
Average Score: 7
0% knows the answer to this question:
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Challenging Math Quiz
You aren't smart enough to score a solid 10!
Average Score: 8
0% knows the answer to this question:
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SUDDEN DEATH QUIZ
Try to stay on your feet!
Average Score: 0
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Mathematics Quiz
What did you score? Let us know in the comments
Average Score: 7
0% knows the answer to this question:
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Math Quiz
Absolutely no one scores higher than a 5
Average Score: 8
0% knows the answer to this question:
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Math Quiz
Are you real mathelete? Let us know below!
Average Score: 8
0% knows the answer to this question:
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Can you solve this?
go to Math Quiz
Average Score: 9
0% knows the answer to this question:
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HARD Math Quiz
Do you know the answer to this riddle?
Average Score: 8
0% knows the answer to this question:
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Math Quiz
Only those who are good with numbers stand a change!
Average Score: 9
0% knows the answer to this question:
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Everybody likes music, but how much do you know about it?
Try this Proverbs quiz and see if you can find the missing word!