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