A) Amana
B) Raytheon
C) Whirlpool
D) GE
Correct Answer: A) Amana
Explanation: Amana introduced the first commercially successful microwave oven in 1967, which became widely used for its convenience in cooking and reheating food.
A) Doug Engelbart
B) Mark Weiser
C) Steve Mann
D) Alan Turing
Correct Answer: C) Steve Mann
Explanation: Steve Mann is recognized as a pioneer in wearable computing, creating early devices that are considered precursors to modern smartwatches and wearable technology.
A) Double-acting Engine
B) Steam Turbine
C) Condenser
D) Boiler
Correct Answer: C) Condenser
Explanation: James Watt developed the condenser, an essential improvement to the steam engine, which reduced fuel consumption and increased efficiency.
A) Robert Koch
B) Louis Pasteur
C) Jonas Salk
D) Edward Jenner
Correct Answer: D) Edward Jenner
Explanation: Edward Jenner developed the first successful smallpox vaccine in 1796, laying the foundation for modern immunology and vaccination practices.
A) Alberto Santos-Dumont
B) Ferdinand von Zeppelin
C) Wright Brothers
D) Louis Blériot
Correct Answer: A) 1903
Explanation: The Wright brothers achieved their first successful powered flight in 1903, marking the beginning of modern aviation.
A) Elias Howe
B) Isaac Singer
C) Charles Babbage
D) James Watt
Correct Answer: B) Isaac Singer
Explanation: Isaac Singer improved upon earlier designs and developed a practical and efficient sewing machine in the 1850s, which became widely used in the garment industry.
A) Vaccination
B) Pasteurization
C) Refrigeration
D) Sterilization
Correct Answer: B) Pasteurization
Explanation: Louis Pasteur invented pasteurization, a process that kills harmful bacteria in food and beverages through heating, significantly improving food safety.
A) Tetracycline
B) Streptomycin
C) Penicillin
D) Erythromycin
Correct Answer: C) Penicillin
Explanation: Alexander Fleming discovered penicillin in 1928, the first widely effective antibiotic, which has since saved countless lives by treating bacterial infections.
A) Chester Carlson
B) Edwin Land
C) James Clerk Maxwell
D) Josephine Cochrane
Correct Answer: A) Chester Carlson
Explanation: Chester Carlson invented the first practical photocopier, known as xerography, in 1938, which revolutionized document copying and printing.
A) Albert Einstein
B) Dean Kamen
C) Frederick Banting
D) Paul Langerhans
Correct Answer: B) Dean Kamen
Explanation: Dean Kamen developed the first practical insulin pump in the 1970s, improving diabetes management by providing a continuous supply of insulin.
A) Radio
B) Telegraph
C) Telephone
D) Fax Machine
Correct Answer: B) Telegraph
Explanation: Samuel Morse developed the telegraph in the 1830s, allowing long-distance communication using coded electrical signals, which transformed communication and information sharing.
A) Kodak
B) Sony
C) Canon
D) Nikon
Correct Answer: A) Kodak
Explanation: Kodak introduced the first practical digital camera in 1975, marking a significant step in the development of digital photography and imaging technology.
A) Alexander Graham Bell
B) Guglielmo Marconi
C) Thomas Edison
D) Emile Berliner
Correct Answer: C) Thomas Edison
Explanation: Thomas Edison invented the phonograph in 1877, the first device capable of both recording and reproducing sound, marking a significant advancement in audio technology.
A) Boeing 747
B) Douglas DC-3
C) Concorde
D) Lockheed JetStar
Correct Answer: B) Douglas DC-3
Explanation: The Douglas DC-3, introduced in 1936, was the first successful commercial airliner that revolutionized air travel with its reliability and efficiency.
A) Elmer Sperry
B) Thomas Edison
C) Charles Kettering
D) Ferdinand Porsche
Correct Answer: D) Ferdinand Porsche
Explanation: Ferdinand Porsche developed one of the first practical electric cars, the Lohner-Porsche Mixte, in the late 19th century, contributing to the early development of electric vehicles.
A) Space Shuttle
B) Liquid-Fueled Rocket
C) GPS
D) Satellite
Correct Answer: B) Liquid-Fueled Rocket
Explanation: Robert H. Goddard developed the first successful liquid-fueled rocket, which laid the groundwork for modern rocketry and space exploration.
A) Marc Andreessen
B) Tim Berners-Lee
C) Vint Cerf
D) Robert Cailliau
Correct Answer: A) Marc Andreessen
Explanation: Marc Andreessen developed Mosaic, the first widely adopted web browser, in 1993, which played a crucial role in popularizing the World Wide Web.
A) X-ray Technology
B) Non-invasive Imaging
C) Ultrasound Imaging
D) PET Scan
Correct Answer: B) Non-invasive Imaging
Explanation: The MRI (Magnetic Resonance Imaging) machine, invented in the 1970s, introduced non-invasive imaging techniques that allow for detailed visualization of internal body structures.
A) Josephine Cochrane
B) Eliza Murphy
C) James Dyson
D) George Eastman
Correct Answer: A) Josephine Cochrane
Explanation: Josephine Cochrane invented the first practical automatic dishwasher in 1886, which revolutionized kitchen appliances and domestic chores.
A) Vacuum Tube
B) Field-Effect Transistor
C) Bipolar Junction Transistor
D) Integrated Circuit
Correct Answer: C) Bipolar Junction Transistor
Explanation: The bipolar junction transistor, developed in the late 1940s, was the first practical semiconductor transistor and laid the foundation for modern electronic devices.
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