A. 1800s B. 1880s C. 1890s D. 1900s Explanation: In 1904, John Ambrose Fleming invented the first practical electron tube…
A. Electric Drill B. Electric Shaver C. Electric Fence D. Electric Heater Explanation: The Electric Drill was the invention of…
A. S. Sperrow B. O. Stricheg C. T. Henman D. C. Cockerell Explanation: Christopher Cockerell invented the hovercraft in 1956.…
A. Elijah McCoy B. Jan Ernst Matzeliger C. Ernest Just D. Lewis Latimer Explanation: Matzeliger never benefited financially from his…
A. S. Tuberosum B. W. Raleigh C. E. Asselbergs D. K. Edwards Explanation: Instant mash was invented by Edward A…
A. Albert Einstein B. Michael Skube C. George Gamow D. Roger Penrose Explanation: George Gamow. Gamow, who died in 1968,…
A. Lewis Edson Waterman B. Sir William Grove C. Charles Kettering D. George Fountain Explanation: Lewis Edson Waterman patented the…
A. Robert Koch B. Edward Jenner C. Robert Hooke D. Louis Pasteur
A. 1874 B. 1840 C. 1895 D. 1900 Explanation: Joseph F. Glidden was born in New York on Jan. 18,…
A. Isaac Newton B. Albert Einstein C. Benjamin Franklin D. Marie Curie
A. 1950s B. 1960s C. 1970s D. 1980s Explanation: On September 12, 1958, Jack Kilby demonstrated the first working IC…
A. Biro Brothers B. Waterman Brothers C. Bicc Brothers D. Write Brothers Explanation: The Hungarian brothers, Laszlo and George Biro,…
A. Pneumatic rubber tire B. Automobile wheel rim C. Rubber boot D. Model airplanes Explanation: Invented in 1887.
A. Diving bell B. Steam boat C. Hot air balloon D. Rotary steam engine
A. Dynamite B. Ladders C. Race cars D. Parachute Explanation: Many people who tried to test the first parachutes died…
A. Sir Frank Whittle B. Gottlieb Daimler C. Roger Bacon D. Lewis E. Waterman Explanation: Dr. Hans von Ohain and…
A. Michael Faraday B. Fahrenheit C. Sir Alexander Graham Bell D. Thomas Alva Edison Explanation: Gramophone was invented by Thomas…
A. Bifocal spectacles B. Radio C. Barometer D. Hygrometer Explanation: Invented in 1760.
A. G. Ferdinand Von Zeppelin B. Sir Frank Whittle C. Roger Bacon D. Leo H Baekeland
A. The brake used in modern elevators B. Jet Engine C. Turbine D. Hydraulic Crane Explanation: In 1853, American inventor…