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Discovery & Invention Test 162
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Discovery & Invention Test 162
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  • Question 1/5
    1 / -0.25
    A transistor is a semiconductor device which was invented by?
    Solutions
    A transistor is a semiconductor device used to amplify or switch electronic signals and electrical power. William Bradford Shockley Jr. was an American Physicist and inventor. Shockley was the manager of a research group.
  • Question 2/5
    1 / -0.25
    Who invented the Ballpoint Pen?
    Solutions
    The Hungarian brothers, Laszlo and George Biro, made the first ball point pen in 1894.
  • Question 3/5
    1 / -0.25
    Tetris, a type of a video game was invented by __________.
    Solutions
    Alexey Leonidovich Pajitnov is a Russian video game designer and computer engineer who developed Tetris while working for the Dorodnitsyn Computing Centre of the Soviet Academy of Sciences, a Soviet government-founded R&D center.
  • Question 4/5
    1 / -0.25
    Who invented the Printed Press?
    Solutions

    • Steven Sasson invented the first portable digital camera.

    • Fibre optical cable was invented by Narinder Singh Kapany.

    • Printing Press was invented by Johannes Gutenberg.

    • J L Baird was the man who invented Television

  • Question 5/5
    1 / -0.25
    Which scientist discovered the ‘Penicillin’?
    Solutions

    • Alexender Fleming discovered ‘Pencillin’.


    • He shared the Nobel Prize in Physiology or Medicine in 1945 with Howard Florey and Ernst Boris Chain.


    • Penicillins are a group of antibacterial drugs that attack a wide range of bacteria.


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