86% knows the answer to this question: "What is the height of the sea's surface generally called? "

And do you know the answer to this one? "What is magma, which has surfaced through a volcanic eruption?"

41% knows the answer to this question: "What else do you need to make your own toy guitar besides a ruler and rubber bands? "

And do you know the answer to this one? "What long-gone bird often completes the phrase "Dead as a"?"

74% knows the answer to this question: "What is a crown? "

And do you know the answer to this one? "Which band fronted by Thom Yorke released "The King of Limbs" in 2011?"

75% knows the answer to this question: "What would you call a "low blood calcium level"? "

And do you know the answer to this one? "What medical term refers to increased fluid?"

44% knows the answer to this question: "Which King of England had six wives? "

And do you know the answer to this one? "Which nation's satellite called the Dong Fang Hong 1 is launched into orbit on April 24th 1970?"

79% knows the answer to this question: "Who lent his name to a Lean Mean Fat Reducing Grilling Machine that made him more money than boxing ever did? "

And do you know the answer to this one? "Which of these countries is located closest to Cuba?"

88% knows the answer to this question: "Who recorded the hit single "Two Out of Three Ain't Bad" in 1978? "

And do you know the answer to this one? "Which of the following was a hit single for The Kinks in 1970?"

86% knows the answer to this question: "Which of these is in the vegetables group? "

And do you know the answer to this one? "What cocktail, made from vodka and cranberry juice and popular with women in the 1990s, shares its name with a magazine also popular with women in the 1990s?"

67% knows the answer to this question: "What is the "Arabic" number for the Roman numeral X? "

And do you know the answer to this one? "To better show off Technicolor in "The Wizard of Oz," MGM changed Dorothy's silver slippers to what color?"

37% knows the answer to this question: "Find the next number (rounded off) in the following sequence: 48.00, 24.00, 12.00, 6.00... "

And do you know the answer to this one? "Strax has 23 cards and Vastra has 34 cards. How many cards have they got in total?"

38% knows the answer to this question: "Before reaching the adult stage, which of these creatures undergoes metamorphosis? "

And do you know the answer to this one? "Who did singer Beyoncé marry in 2008?"

79% knows the answer to this question: "Auld Lang Syne is based on a Robbie Burns poem. When is it usually sung? "

And do you know the answer to this one? "Who sang songs 'I Will Always Love You', 'I Have nothing', etc for the 1992 movie 'The Bodyguard'?"