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General knowledge

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  • What is the hardest natural substance on Earth?
    Diamond
  • What is the powerhouse of the cell?
    Mitochondria
  • What is the main language spoken in Iran?
    Persian (Farsi)
  • Which famous scientist invented the light bulb (commercially successful version)?
    Thomas Edison
  • What element is needed for iron to rust?
    Oxygen (and water, but oxygen is essential)
  • Which singer became the youngest-ever solo artist to win Album of the Year at the Grammys?
    Billie Eilish
  • How many strings does a standard guitar have?
    6 (NOT 7!)
  • What is the capital city of South Korea?
    Seoul
  • Which country invented paper?
    China
  • What is the longest-running animated TV series in history?
    The Simpsons
  • Who is the Greek god of the sea?
    Poseidon
  • Which organ in the human body produces insulin?
    Pancreas
  • Which natural disaster is measured with the Richter scale?
    Earthquakes
  • Which country gifted the Statue of Liberty to the United States?
    France
  • What is sushi traditionally wrapped in?
    Seaweed (nori)
  • What is the longest bone in the human body?
    Femur
  • How many time zones are there in Russia?
    11
  • Who wrote Hamlet?
    Shakespeare
  • What is the largest mammal in the world?
    Blue whale
  • What is the main ingredient in traditional guacamole?
    Avocado
  • Which country drinks the most coffee per capita?
    Finland
  • What is the largest planet in our solar system?
    Jupiter
  • What is the largest desert in the world (by area)?
    Antarctic Desert
  • What is the boiling point of water in Celsius?
    100°C
  • Zendaya stars in HBO’s series Euphoria. What is her character’s name?
    Rue Bennett
  • Which US state is known as “The Sunshine State”?
    Florida
  • Which blood type is known as the universal donor?
    O negative
  • Who wrote the novel 1984?
    George Orwell
  • Which actor played Iron Man in the Marvel Cinematic Universe?
    Robert Downey Jr.
  • What is the chemical symbol for potassium?
    K
  • What year did the Berlin Wall fall?
    1989