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Try not to cry when you do this impossible Science quiz!

Question 1 of 10

In 1962, Yukio Horie invented the first practical fiber-tip pen to accommodate which country's system of writing?

Question 2 of 10

As cities get crowded with phones, they can shoehorn in new overlay area codes. The first one, in 1992, was 917. Where?

Question 3 of 10

Named for a North African coast, what now extinct sub-species of lion was used in the Roman arena?

Question 4 of 10

Superconductors lose their electrical resistance. How do you get them to do this?

Question 5 of 10

Most large freshwater lakes are in the rift valleys between tectonic plates. Which one is in the Great Rift Valley?

Question 6 of 10

When really big stars die, they blow up as a supernova, spreading debris all over the place. What does this debris become?

Question 7 of 10

How many sides does a dodecagon have?

Question 8 of 10

What percentage of acetic acid is legally allowed in vinegar?

Question 9 of 10

What are organic compounds in which some of the bonding elements are delocalized?

Question 10 of 10

What Central American bird (and national symbol) has a tail so long that the only safe way it can fly off a branch is by jumping backward first?

Who Sang Quizzes

Nobody knows more than 7 answers!

Who Sang These Songs?

Average Score: 7

70% knows the answer to this question: "Who sang "Rock Around the Clock" (1954)? "
Nobody can score a 6 or better in this love song quiz

Average Score: 7

24% knows the answer to this question: "Who sang "I Will Always Love You"? "
Who Sang These Songs?

Prove us wrong and leave your score in the comments

Average Score: 8

54% knows the answer to this question: "Who sang the song, "Johnny B. Goode" (1958)? "
Which artists are we looking for?

Will you tap out early?

Average Score: 4

65% knows the answer to this question: "Who sang the famous song, "Dancing in the Moonlight" (1972)? "
Who sang?

How many could you name? Let us know below!

Average Score: 7

72% knows the answer to this question: "Who sang the famous song, "Blue Suede Shoes" (1956)? "
Which artists are we looking for?

Do you remember these songs?

Average Score: 7

60% knows the answer to this question: "Who made “Tears in Heaven” a heartfelt classic in 1992? "

General Knowledge Quizzes