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.
Download PDF file of today’s important Pakistan Current Affairs 26 August 2019. These are top latest breaking news about pakistan…
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…
A. 1810s B. 1840s C. 1870s D. 1890s Explanation: On May 24, 1844, Samuel Morse send his famous message, "What…
A. Screw propellor B. Electric streetcar C. Chesterfield D. Sleeping (railway) car
A. France B. United States C. Philippines D. England Explanation: The yo-yo was first used by hunters as weapons. They…
A. Sir Alexander Graham Bell B. Michael Faraday C. Alfred B. Nobel D. Thomas Alva Edison