85% knows the answer to this question: "Which of these is the name, not of a cloud, but of an ancient mound of earth on a tomb or grave? "

And do you know the answer to this one? "What is a benefit of a limestone quarry?"

81% knows the answer to this question: "During WWI, what Russian czar decided to take personal command of the military, which he botched so badly the monarchy was overthrown altogether? "

And do you know the answer to this one? "In 1993, the Maastricht Treaty finally came into place, renaming the European Community what?"

83% knows the answer to this question: "Which powerful Mexican man's wife bought six Diego Rivera paintings in 1910? "

And do you know the answer to this one? "Which music term matches "a soprano with a spinto voice"?"

45% knows the answer to this question: "If you're eating dirt, you may be eating ampo, a soil-based dish from Tuban, a village in East Java Province in what country? "

And do you know the answer to this one? "What Facebook co-founder made the news for hunting all the meat he ate?"

69% knows the answer to this question: "Willy Brandt pursued a policy called Ostpolitik, in which he normalised relations with his communist neighbours. Of what country was he chancellor? "

And do you know the answer to this one? "Just 49 when Sanford and Son began, what comedy legend wore makeup to look much older ? and was annoyed that so many people thought he was much older?"

92% knows the answer to this question: "Which verb is written in the future tense? "

And do you know the answer to this one? "In What century was the novelist Jane Austen born?"

85% knows the answer to this question: "What was Kino's profession in "The Pearl" by John Steinbeck? "

And do you know the answer to this one? "Domenico Scarlatti's Fugue in G Minor is also known by what name, for the animal that supposedly composed it accidentally by walking across his keyboard?"

78% knows the answer to this question: "Gladiators are famous for being in which European city thousands of years ago? "

And do you know the answer to this one? "What best-selling book is about a hot puzzle craze first originating in Japan?"

68% knows the answer to this question: "What is June 6, 1944 better known as? "

And do you know the answer to this one? "Flat lands with only small changes in elevation are known as what?"

62% knows the answer to this question: "Which of these is in Broadway, Westminster? "

And do you know the answer to this one? "How many other states does New York border?"

94% knows the answer to this question: "The Galaxy S7 is made by which company? "

And do you know the answer to this one? "Which country is singer Bjork from?"

75% knows the answer to this question: "What brand of rye whiskey did Seagram introduce in 1939, to celebrate the royal visit of King George Vl and Queen Elizabeth? "

And do you know the answer to this one? "After which natural feature is the African country of Niger named?"