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Question 1 of 10

Most of the oxygen in the air is produced by what chemical process?

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?

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?

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?

Who Sang Quizzes

Which Artists Sang These Songs?

Only 1 in 10 finish this quiz
Can you tell us who sang these songs?

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Did you know the songs?

and the artists who sang them?
These Songs Filled The Airwaves

but do you know who sang them?
Can you unlock these mysteries?

Who Sang These Songs?
Who Sang These Songs?

Do you have a favorite songs between these 10 songs?
Who sang these songs from the 50s, 60s & 70s

Which decade do you love musically?
Who Sang These 2000s Songs?

Scoring a 4 is already awesome! Dare to share?
Who sang these songs?

Are you older than 40? Then your chance is very slim you will score a 6 or better
Who Sang These Songs?

Can you name the artists we're looking for?
Who Sang These Songs?

We bet you know them! But who sang them?
Who Sang These Legendary Songs?

Most can't name more than 7 artists!

History Quizzes

History Questions

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Can you beat me in this History Quiz?

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10 Historical Trivia Questions

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History Quiz

What answer did you not know?
This History Quiz is Rough

Try scoring higher than a 5
Across the Pond: UK & USA History Quiz

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History Quiz

Do you have what it takes?
Unbeatable History Quiz

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History Quiz

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Quiz on History

We think you can do way better than a difficult 6
History Quiz

Tell us if you are a true historian
10 History Questions

Who knows enough for a 10/10

Geography Quizzes

Geography Quiz

You're invited!
Geography Quiz

Can you beat the geographer?
Geography Quiz

What’s your next holiday destination?
Play This Geography Quiz Now!

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Hard Geography Quiz

Only for people with a lot of knowledge!
Geography Quiz

Thumbs up when you score a 10/10
Geography Quiz

Think you can find your way?
10 Question About Planet Earth

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Geography Quiz

Can you handle this one?
Geography Quiz

Did you find your way to the last question?

Music Quizzes

How often do you listen to music?

HARD Music Quiz
We bet you aren't a musical genius

Music Knowledge Quiz
Escape from reality and play this hard music quiz

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Barbra Streisand Quiz

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Quiz about Music

Only real music fans score a decent 7+
How often do you listen to music?

HARD Music Quiz
New Music Trivia

Can you answer all music questions correctly?
Music Quiz

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Challenging Music Quiz

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Music Quiz

Can you do better than a 5 out of 10?
Quiz about Music

Only real music fans score a decent 7+
Music Quiz

Hats off if you're able to score a perfect 10

Science Quizzes

Only for quizzers with an high IQ

Play This Science Quiz
Can you get a decent score? Share if you did!

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10 Science Questions

Did you know all answers?
Hard Science Quiz

We think this quiz is way too hard for you!
Science Quiz

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Science Quiz

Nobody can score higher than a lousy 5
Science Quiz

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General Trivia Quiz

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Hard Science Quiz

Only with a degree you stand a chance!
Very hard science quiz, can you deal with it?

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Do you consider yourself smart? Prove it now with this hard General Knowledge Quiz

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Hard Science Quiz

Who is able to score higher than an impossible 8?

Food & Beverage Quizzes

Unknown Fruit Quiz

No one scores a 6 or more in this unknown fruit quiz!
Quiz About Food & Beverages

Beat a 7 and post your score below
Food and Beverage

10 hard questions about food and beverage
Not hungry? You will be soon!

Quiz About Food & Beverages
Food & Beverages Quiz

Please share your favorite restaurant in the comments
Food & beverages. You won't even get close to answering all 10 questions correctly.

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Are you hungry yet?

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This one is gonna make you thirsty!

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Only food critics can answer these 10 hard questions about food.

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Food and Beverage Quiz

Do you remember what this was used for?
A quiz for those who like an alcoholic beverage once in a while!

Can you score at least 5 answers right?
Challenging Food & Beverages Quiz

We challenge you to beat her score!

General Knowledge Quizzes

10 Trivia Questions

Are you a Trivia Titan?
Mixed Questions: Sudden Death Style

Did you completed this one at first try?
Can you name the fuel company?

Only a few can!
Quiz for Smart People

Are you smarter than him? Prove us!
15 General Knowledge Questions

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General Knowledge Quiz

Can you answer these 10 questions flawlessly?
Mixed Trivia Quiz that cannot be defeated

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Take This Knowledge Quiz

Let's test your knowledge!
General Knowledge Quiz

Proof Your Knowledge by scoring an 8+
Put Your Knowledge to the Test

Sorry, but this quiz is too hard for most of us
Can you solve this riddle?

10 Mixed Questions
General Knowledge Quiz

We bet you can do so much better than this man

Literature Quizzes

Literature Quiz

How much knowledge have you stored in you brain about Literature?
General Knowledge

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Only bookworms are able to score a perfect score in this literature quiz.

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Did you store a lot of knowledge of Literature in your brain?

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Share if you owned this literature quiz with a decent score of 6+

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Literature Quiz

How much knowledge have you stored in you brain about Literature?
Literature Quiz

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Is your brain smart enough to score an 8+?

Mixed Trivia Quiz
Literature Quiz

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Literature Quiz

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Do you like books? Then takes this fun quiz and share your score.

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Literature Test

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Movie Quizzes

It's highly doubtful you can complete even half of these movie titles in this quiz.

Movie Quiz
HARD Movie Quiz

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Start Movie Quiz

Are you a movie genius?
Movie Quiz

Leave your favorite Horror movie below in the comments
Lights, Camera, Quotes!

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10 Questions about popular movies

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10 Hard Movie Questions

What is the last movie you have seen?
how often do you go to the movie theater?

Movie Quiz
Quiz About Movies

What did you score?
Movies: 10 Daunting Questions

We hope you have watched enough movies
Movie Quiz

Can you top a 6 out of 10
Crazy Quiz About Movies!

Nobody will be able to score a perfect 10