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General Knowledge on Inventions | GK Test on Inventions Page 16
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Inventions

General Knowledge on Inventions

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151. In which year Chester Floyd Carlson invented photocopier?
152. In which year Facebook was made?
153. Which Year Rotary Printing Press was invented by Richard Hoe?
154. In which year optical disc storage 'DVD' was invented and developed?
155. Which scientists transistors that are used in every electronic product of modern era was invented?
  • A. John Bardeen and Walter Brattain
  • B. Otto Hahn
  • C. Lisa Meitner and George Stephenson
  • D. William Shockley
  • Check Answer | Discussion
156. Which country invented earth inductor compass?
157. In which year Dr. Robert H. Goddard invented first liquid-fueled rocket?
158. In which year was Anesthesia invented?
159. Which created Internet protocol suite basis for modern internet was developed?
  • A. Jack Kilby and Robert Noyce
  • B. Lisa Meitner and George Stephenson
  • C. Floyd Farris and J.B. Clark
  • D. Vinton Cerf and Robert E. Kahn
  • Check Answer | Discussion
160.  Who have scientists provided basis for inventing Circuit Breaker?

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