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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

Who Sang These Iconic Hits?

How many songs and artists did you know?
Who Sang These Songs?

Who is able to score a 6 or higher?
Who Sang These 10 Hits?

We dare you to score at least an 8
Everyone knows these songs

did you?
Who Sang These Songs

We bet you won't know the artists of at least 5 songs
Who Sang These Songs?

Can you tell us by answering them correctly?
We Think Everyone Knows These Songs

but do you know the artists?
Most people don't remember the artist of these famous 70s songs

10 famous songs
Which Song Is This Famous Line From?

Nobody knows more than 6 songs
Who Sang These Songs?

We're sorry if this one is too hard for you
Who Sang These Songs?

We hope you know more than 5 artists
Everyone Knows These Songs....

but who sang them? What did you score?

History Quizzes

Everybody fails at question 8

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Think you know History?

Show us your score if you dare
70s Nostalgia Quiz

Do you remember?
History quiz for anyone who grew up in the 1970s

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History Quiz

Are you celebrating a perfect 10? Please tell us!
Quiz on historical events.

Please share your score no matter how low or high
History Quiz

What did you score?
Challenging History Quiz

Are you brave enough for this history quiz?
80s Nostalgia Quiz

What videogame did you play in the 80s?
Across the Pond: UK & USA History Quiz

We would love to see your score below
History Quiz

8 or higher? You're pretty smart!
History Quiz

Tell us if you are a true historian

Geography Quizzes

Geography Quiz

Can you handle this one?
Geography Quiz

Did you find your way to the last question?
Geography Quiz

Can you beat the geographer?
Hard Geography Quiz

Only for people with a lot of knowledge!
10 Question About Planet Earth

Did you score a 10? Let us know below!
Geography Quiz

You're invited!
Geography Quiz

Think you can find your way?
Play This Geography Quiz Now!

It's going to be impossible to score a 6+
Geography Quiz

Thumbs up when you score a 10/10
Geography Quiz

What’s your next holiday destination?

Music Quizzes

Music Quiz

How often do you listen to music?
Think you know your Beatles from your Stones?

Can you beat your friends' scores?
Do you know the answer to this musical riddle?

Music Quiz
Music Quiz For Intelligent People

Are you smart enough?
Quiz about Music

Only real music fans score a decent 7+
Barbra Streisand Quiz

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Impossible Music Quiz

This quiz is way too hard for you!
Escape from reality and play this hard music quiz

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Music Quiz

Can you do better than a lousy 6?
HARD Music Quiz

Let us know your score in the comments below
10 difficult questions about John Denver

Let us know your score in the comments
Challenging Music Quiz

We challenge you to score a 7+

Science Quizzes

Take this challenging Science Quiz and share the result with you friends.

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Is anybody smart enough to do it?

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Science Quiz

Did you have all questions correctly? Please tell us
Mad Science Quiz

Did you score higher than 6?
We bet you can't get a decent score with this challenging science quiz.

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Challenging Science Quiz

Please tell us if you DID score higher than a 6 out of 10
Science Quiz

What did you score?
Science Quiz

We challenge you to score higher than a 5
Quiz About Science

Can you answer 5 or more questions correctly?
Quiz on Science.

Are you worthy of the respect?
Very hard science quiz, can you handle it?

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Science Trivia Quiz

How many questions can you answer correctly?

Food & Beverage Quizzes

Food & Beverages Quiz

Did you top a 6? Please tell us!
Quiz about Food

What's the last thing you ate? Leave a comment
We bet you're getting hungry answering this one

Challenging Food & Beverages Quiz
We created a fun but hard quiz about pizza for all you junk food lovers. Take the challenge!

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Food & Beverages Quiz

Did you top an 8? Please tell us!
Food & Beverage Quiz

10 questions that will leave you hungry and thirsty
General Knowledge

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Challenging Food Quiz

10 HARD questions about food & beverages
Prove us you do have the knowledge and score a 6 or higher!

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Impossible Food Quiz. Can you get a decent score?

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Are you in for a challenge?

Accept it here!
Are you the one who steps up?

If so, you have to score a perfect 10!

General Knowledge Quizzes

Brain-Teasing Trivia Questions

We wonder what you will score
10 Hard Questions

This one is probably very hard for you
General Knowledge Quiz

Can you please beat this man!
General Knowledge Quiz

How many correct answers did you have?
General Knowledge Quiz: Sudden End Edition

You won't get past question 12
Take This Knowledge Quiz

Let's test your knowledge!
Quiz mixed with knowledge

Try proving us wrong!
General Knowledge Quiz

Score a 10/10 and show off in the comments
10 Mixed Questions

Let us know your 10/10 below
General Knowledge Quiz

We hope this one isn't a struggle for you
Do you remember?

Who Sang These Songs?
Mixed Trivia Quiz that cannot be defeated

Are you able to score higher than a 5? Please share in the comments

Literature Quizzes

Literature Test

Who is able to beat her score? Share below
Old slang from the 20's

Can you score a perfect 10?
Quiz About Literature

Only for educated persons
Literature Quiz

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What do you know about these books and their writers?

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Literature Quiz

Good luck playing this one
Literature quiz. Are you a bookworm?

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Are you a real bookworm?

Then try to answer these questions about literature
How much of knowledge about Literature have you stored in your brains?

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Don't try this one if you don't know some books!

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Literature Trivia with 10 hard question only serious bookworms can answer

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This quiz is only for real bibliophiles. Share your result to show if you are.

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Movie Quizzes

Movie Trivia Quiz

Scoring a 6 or better is harder than you think!
Crazy Quiz About Movies!

Nobody will be able to score a perfect 10
Movie Quiz

Leave your favorite Horror movie below in the comments
Movie Quiz

Can you top a 6 out of 10
Movies & Series Quiz

Which TV series have you watched more than once?
Movie Quiz

Are you going to score a perfect 10?
Quiz about Movies

What is the last movie you saw?
Quiz on Movie Titles

Only 10% can complete all 10 of these movie titles
Quiz About Movies

What did you score?
Movies Quiz

Share if you scored higher than a 6
Only 10% can complete all 10 of these movie titles

Movie Title Quiz
90% can't even score a 6 out of 10

Movie Quiz

Math Quizzes

Math Quiz Time!

Think you have what it takes to ace it?
Math Quiz

Absolutely no one scores higher than a 5
Math Quiz

We challenge you to score an 8+
Math Quiz

We hope you'll score higher than a 3+4
Math Quiz

Only those who are good with numbers stand a change!
Math Examination

Try scoring a 7+
Can you solve this?

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Math Quiz

Only those who are good with numbers stand a change!
Math Quiz

Only those who are good with numbers stand a change!
Math Quiz

Can You Solve It Without a Calculator?
Challenging Mathematics Quiz

Prove us if you are a true Mathematics Mastermind!
10 Math Questions

For you to solve