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Question 1 of 10

Chatoyancy is an optical reflectance found in particular in chrysoberyl, aquamarine, tourmaline, apatite and scapolite. What is the more common name for it?

Question 2 of 10

What organic gemstone is, technically, a kind of coal?

Question 3 of 10

The aptly named Marian Moon was born just a month before the Wright brothers flew at Kitty Hawk. And her son was the second man on the moon. Who was he?

Question 4 of 10

What American bovine can detect odors up to a mile away and, when mating, makes rutting sounds you can hear up to three miles away?

Question 5 of 10

The anterior cingulate cortex goes to work when you see something weird. The dorsolateral prefrontal cortex is your memory's delete button. And they tend to off together, explaining the brain's ability to avoid what nuisance?

Question 6 of 10

The Galilean moons, as discovered by Galileo in 1609, orbit which planet?

Question 7 of 10

Given its shape, what is the "edible" nickname for the TiVo remote?

Question 8 of 10

As a physical science, what does optics study?

Question 9 of 10

A dislocated shoulder is no laughing matter, as what bone gets separated from the scapula at the glenohumeral joint?

Question 10 of 10

The largest order of vertebrates are the Perciformes, who make up 40% of what animal?

Who Sang Quizzes

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Please tell us if you know more than 6 songs

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Who is able to score higher than a 6?

Average Score: 7

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Do you know the answers?

Find out by playing this quiz!

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Are you a music expert?

Who Sang These Songs?

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Who sang these songs from the 50s, 60s & 70s

Which decade do you love musically?

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Who sang these songs?

Question 5 is impossible

Average Score: 8

43% knows the answer to this question: "Who sang the famous song Yesterday (1965)? "

General Knowledge Quizzes

Brain-Teasing Trivia Questions

We wonder what you will score

Average Score: 5

22% knows the answer to this question: " "
General Knowledge Quiz

And..? Did you know it all?

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94% knows the answer to this question: " "
Trivia Quiz with a Mix of Questions

No one is able to score higher than a 6

Average Score: 8

53% knows the answer to this question: " "
Tough General Knowledge Quiz

We hope this one isn't a struggle for you

Average Score: 5

46% knows the answer to this question: " "
His score is unbeatable by anyone!

Impossible Knowledge Quiz

Average Score: 8

78% knows the answer to this question: " "
Sudden Death

Only a genius will make it all the way to question 10

Average Score: 7

70% knows the answer to this question: " "

Math Quizzes

Math Quiz

We hope you're smart enough for these questions

Average Score: 8

52% knows the answer to this question: "If you eat 23 sweets from a tub that contains 687 how many sweets do you have left? "
Math Quiz

Can You Solve It Without a Calculator?

Average Score: 7

97% knows the answer to this question: "38x39÷38 equals what number? "
Math Quiz

Only those who are good with numbers stand a chance!

Average Score: 10

93% knows the answer to this question: "Which number is most commonly considered unlucky? "
Mathematics Quiz

Nobody is able to score a perfect 10

Average Score: 8

58% knows the answer to this question: "What is double 26? "
Math Quiz

Only those who are good with numbers stand a change!

Average Score: 8

22% knows the answer to this question: "What is the total of 25 + 53 + 32? "
Math Quiz

Only those who are good with numbers stand a change!

Average Score: 8

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