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DISCOVERIES AND INVENTIONS MCQs

Scientists, Inventions & Discoveries

Total Questions : 949 | Page 4 of 95 pages
Question 31. What invention is credited to the Russian born American inventor Vladimir Kosma Zworykin?
  1.    Telegraph
  2.    Radio
  3.    Television
  4.    Dishwasher
 Discuss Question
Answer: Option C. -> Television
Question 32. Benjamin Franklin was a prolific inventor. He invented the lightning rod, the Franklin stove, studied electricity, discovered the Gulf Stream, started the first library, and on and on. Among his many other inventions, what musical instrument did he invent?
  1.    Banjo
  2.    Oboe
  3.    Clarinet
  4.    Harmonium
 Discuss Question
Answer: Option D. -> Harmonium
Question 33. What Thomas Davenport invented?
  1.    Screw propellor
  2.    Electric streetcar
  3.    Chesterfield
  4.    Sleeping (railway) car
 Discuss Question
Answer: Option B. -> Electric streetcar
Question 34. Where was the yo-yo invented?
  1.    France
  2.    United States
  3.    Philippines
  4.    England
 Discuss Question
Answer: Option C. -> Philippines
Question 35. What Elisha Otis invented?
  1.    The brake used in modern elevators
  2.    Jet Engine
  3.    Turbine
  4.    Hydraulic Crane
 Discuss Question
Answer: Option A. -> The brake used in modern elevators
Question 36. For what does the world owe Almon Strowger a debt of gratitude?
  1.    Parking Meters
  2.    Vending Machines
  3.    Automatic Telephone Exchanges
  4.    Traffic Lights
 Discuss Question
Answer: Option C. -> Automatic Telephone Exchanges
Question 37. In which decade was the telegraph invented?
  1.    1810s
  2.    1840s
  3.    1870s
  4.    1890s
 Discuss Question
Answer: Option B. -> 1840s
Question 38. What inspired reflecting road lights to be invented?
  1.    Car door reflecting mirrors
  2.    The light a cat's eyes gave off on a fence
  3.    Sun light on steel posts on road sides
  4.    The sun light on the windshield
 Discuss Question
Answer: Option B. -> The light a cat's eyes gave off on a fence
Question 39. When were blue jeans invented?
  1.    1900s
  2.    1860s
  3.    1870s
  4.    1850s
 Discuss Question
Answer: Option C. -> 1870s
Question 40. Who invented Electric Generator?
  1.    Sir Alexander Graham Bell
  2.    Michael Faraday
  3.    Alfred B. Nobel
  4.    Thomas Alva Edison
 Discuss Question
Answer: Option B. -> Michael Faraday

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