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  • Question
  • In which decade was the transistor invented?


  • Options
  • A. 1940s
  • B. 1950s
  • C. 1960s
  • D. 1980s

  • Correct Answer
  • 1940s 

    Explanation
    On December 23, 1947, William Shockley, Walter Brattain and John Bardeen, of Bell Labs, announced their discovery of the point-contact germanium transistor to management.

  • Inventions problems


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    • 1. Who invented Jet Engine?

    • Options
    • A. Sir Frank Whittle
    • B. Gottlieb Daimler
    • C. Roger Bacon
    • D. Lewis E. Waterman
    • Discuss
    • 2. In which decade was the Internet first implemented?

    • Options
    • A. 1940s
    • B. 1950s
    • C. 1960s
    • D. 1980s
    • Discuss
    • 3. What toy did George Lerner create for Hasbro company in 1952?

    • Options
    • A. Sit and Spin
    • B. Talking baby doll
    • C. Mr. Potato Head
    • D. Hula hoop
    • Discuss
    • 4. Where were wigs first invented?

    • Options
    • A. Japan
    • B. France
    • C. Egypt
    • D. China
    • Discuss
    • 5. Ralph Samuelson was only 18 when he invented this sporting item in 1922. What was that?

    • Options
    • A. Golf tee
    • B. Motorboat
    • C. Water skis
    • D. Hang glider
    • Discuss
    • 6. Who invented fuel cells in 1839?

    • Options
    • A. Buckminster Fuller
    • B. Sir William Grove
    • C. Sylvester Graham
    • D. Joyce Hall
    • Discuss
    • 7. What George Westinghouse invented?

    • Options
    • A. Light bulb
    • B. Electric razor
    • C. Refrigerator
    • D. Railway air brakes
    • Discuss
    • 8. When was the game Frisbee invented?

    • Options
    • A. 1920s
    • B. 1900s
    • C. 1870s
    • D. 1890s
    • Discuss
    • 9. When was the first elevator built?

    • Options
    • A. 1743
    • B. 1739
    • C. 1760
    • D. 1785
    • Discuss
    • 10. This part-time race car driver invented the bucket seat in 1969. Who was he??

    • Options
    • A. Steve McQueen
    • B. Harrison Frazier
    • C. Paul Newman
    • D. John Wayne
    • Discuss


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