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10 difficult questions
Question 1 of 10
In the measurement of time, what does GMT stand for?
Question 2 of 10
What weapon, which we learned smells good in the morning in the movie Apocalypse Now, was originally a powdered aluminum soap of naphthalene with palmitate, which becomes sticky when mixed with gasoline?
Question 3 of 10
Mintaka is the Arabic word for "belt." Mintaka, Alnilam and Alnitak are the stars that keep what constellation's pants from falling down?
Question 4 of 10
Blood arrives through the renal vein, moves through filtration units called nephrons and leaves its garbage behind in Bowman's capsule. Where are we?
Question 5 of 10
When is a plane most likely to go through a wind tunnel?
Question 6 of 10
You may have heard of nanotechnology. You know what "technology" is. What does "nano" mean?
Question 7 of 10
Often made using either cups or a mill 10 meters (33 ft) above ground, what does an anemometer measure?
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Question 8 of 10
The leaves of what living fossil are thought to improve memory and concentration?
Question 9 of 10
Who was Mensa's second president, and, so far, the only architect with a family of molecules named for him?
Question 10 of 10
The oldest rocks ever found have been more than 4 billion years old, and unlike disappointed brides, geologists are delighted to see them. What are they?

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