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  • Question
  • Who invented Gramophone?


  • Options
  • A. Michael Faraday
  • B. Fahrenheit
  • C. Sir Alexander Graham Bell
  • D. Thomas Alva Edison

  • Correct Answer
  • Thomas Alva Edison 


  • Inventions problems


    Search Results


    • 1. Who invented the BALLPOINT PEN?

    • Options
    • A. Biro Brothers
    • B. Waterman Brothers
    • C. Bicc Brothers
    • D. Write Brothers
    • Discuss
    • 2. The initials JCB on earth-moving equipment are those of the founder of the company that makes it. What is his name?

    • Options
    • A. John Christopher Ballantyne
    • B. Joseph Cyril Bamford
    • C. John Christopher Baxter
    • D. Jack Croxford Baker
    • Discuss
    • 3. What invention caused many deaths while testing it?

    • Options
    • A. Dynamite
    • B. Ladders
    • C. Race cars
    • D. Parachute
    • Discuss
    • 4. Who developed the idea of Crop Rotation?

    • Options
    • A. Potato Peterson
    • B. Turnip Townsend
    • C. Cabbage Carlson
    • D. Swede Svenson
    • Discuss
    • 5. FROZEN FOOD - Who discovered the first practical method of freezing food?

    • Options
    • A. C. Birdseye
    • B. F. Rozenosh
    • C. G. Findus
    • D. R. Scott
    • Discuss
    • 6. What Thomas Davenport invented?

    • Options
    • A. Screw propellor
    • B. Electric streetcar
    • C. Chesterfield
    • D. Sleeping (railway) car
    • Discuss
    • 7. This English inventor is known as the 'Father of Computing.'

    • Options
    • A. Philo Farnsworth
    • B. J. Presper Eckert
    • C. John Mauchly
    • D. Charles Babbage
    • Discuss
    • 8. The Manhattan Project was started by President Roosevelt in 1942 to ensure that the U.S. beat the Germans in developing a nuclear bomb. Whom did Roosevelt appoint as scientific head the Manhattan Project?

    • Options
    • A. Robert Oppenheimer
    • B. James B. Conant
    • C. Leslie R. Groves
    • D. Vannevar Bush
    • Discuss
    • 9. What is the name of the CalTech seismologist who invented the scale used to measure the magnitude of earthquakes?

    • Options
    • A. Charles Richter
    • B. Hiram Walker
    • C. Giuseppe Mercalli
    • D. Joshua Rumble
    • Discuss
    • 10. In which year was MIDI introduced?

    • Options
    • A. 1987
    • B. 1983
    • C. 1973
    • D. 1977
    • Discuss


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