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15 Challenging Questions
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Question 1 of 15
Which planet has the most moons?
Neptune
Saturn
Uranus
Jupiter
Question 2 of 15
Who wrote the dystopian novel "Brave New World"?
Ray Bradbury
Aldous Huxley
George Orwell
Philip K. Dick
Question 3 of 15
In what year was the euro introduced as physical currency?
2004
2002
1995
1999
Question 4 of 15
What is the SI unit of electric current?
Watt
Ohm
Ampere
Volt
Question 5 of 15
Which chess piece can move only diagonally?
Knight
Rook
Bishop
Queen
Question 6 of 15
Which U.S. president served the shortest term?
Millard Fillmore
James Garfield
Zachary Taylor
William Henry Harrison
Question 7 of 15
What is the most spoken language in the world by native speakers?
Mandarin Chinese
English
Spanish
Hindi
Question 8 of 15
Which country invented paper money?
Egypt
Italy
Turkey
China
Question 9 of 15
Which organ is responsible for filtering blood in the human body?
Lung
Kidney
Liver
Heart
Question 10 of 15
What is the name of the galaxy we live in?
Whirlpool
Andromeda
Triangulum
Milky Way
Question 11 of 15
Which country has the oldest continuously used national flag?
Denmark
Sweden
Japan
Austria
Question 12 of 15
How many squares are there on a standard chessboard?
81
64
49
100
Question 13 of 15
Who was the first woman to win a Nobel Prize?
Marie Curie
Rosalind Franklin
Ada Lovelace
Dorothy Hodgkin
Question 14 of 15
Which ancient civilization built Machu Picchu?
Olmec
Inca
Maya
Aztec
Question 15 of 15
What is the main gas found in the air we breathe?
Nitrogen
Carbon Dioxide
Hydrogen
Oxygen
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