A) Nikola Tesla
B) Gottlieb Daimler
C) Karl Benz
D) Rudolf Diesel
Correct Answer: B) Gottlieb Daimler
Explanation: Gottlieb Daimler, along with Wilhelm Maybach, developed the first successful practical internal combustion engine in 1885. This engine became fundamental to the development of automobiles.
A) Karl Landsteiner
B) Richard Lewisohn
C) James Blundell
D) Charles Drew
Correct Answer: B) Richard Lewisohn
Explanation: Richard Lewisohn developed the first practical method for preserving blood for transfusion in 1914, which was crucial for the establishment of blood banks.
A) Roger Hunt
B) James Licklider
C) Charles Fritts
D) Albert Einstein
Correct Answer: A) Roger Hunt
Explanation: Roger Hunt and his team developed the first practical solar-powered calculator in 1970. This innovation used solar cells to power the device, making it more convenient and portable.
A) Albert T. Marshall
B) Fred W. Wolf
C) William C. Durant
D) Willis Carrier
Correct Answer: A) Albert T. Marshall
Explanation: Albert T. Marshall developed the first practical electric refrigerator in 1899. His design improved the ability to preserve food and revolutionized household refrigeration.
A) Otto Wichterle
B) Leonardo da Vinci
C) August Muller
D) Benjamin Franklin
Correct Answer: A) Otto Wichterle
Explanation: Otto Wichterle developed the first successful contact lenses in the 1960s using a hydrogel material, which allowed for more comfortable and practical use compared to earlier designs.
A) Ferdinand Porsche
B) Thomas Edison
C) Nikola Tesla
D) William Morrison
Correct Answer: D) William Morrison
Explanation: William Morrison built the first practical electric car in 1890. His vehicle was an early example of electric-powered transportation, demonstrating the potential of electric cars.
A) Yoshino Akira
B) John Goodenough
C) Stanley Whittingham
D) James Clerk Maxwell
Correct Answer: A) Yoshino Akira
Explanation: Yoshino Akira developed the first commercially successful lithium-ion battery in 1985. This battery technology is widely used in portable electronic devices due to its high energy density.
A) Karl Benz
B) Nikola Tesla
C) Rudolf Diesel
D) Gottlieb Daimler
Correct Answer: C) Rudolf Diesel
Explanation: Rudolf Diesel invented the diesel engine in 1892. This type of engine is known for its fuel efficiency and durability, becoming widely used in transportation and industry.
A) Charles Best
B) Frederick Banting
C) Arnold Kadish
D) Richard Bernstein
Correct Answer: C) Arnold Kadish
Explanation: Arnold Kadish developed the first successful insulin pump in 1963. This device allowed for continuous insulin delivery, improving diabetes management for many patients.
A) Lee De Forest
B) Alexander Graham Bell
C) Thomas Edison
D) William House
Correct Answer: B) Alexander Graham Bell
Explanation: Alexander Graham Bell, who is also known for his work on the telephone, made significant contributions to the development of early hearing aids in the late 19th century.
A) Robert Fulton
B) James Watt
C) George Stephenson
D) Richard Trevithick
Correct Answer: A) Robert Fulton
Explanation: Robert Fulton invented the first practical steam-powered ship, the Clermont, which began service in 1807. This invention revolutionized water transportation.
A) Guglielmo Marconi
B) Edwin Armstrong
C) Lee De Forest
D) David Sarnoff
Correct Answer: C) Lee De Forest
Explanation: Lee De Forest invented the Audion, a vacuum tube that significantly improved radio reception, making portable radio receivers more practical and reliable.
A) George Eastman
B) Louis Daguerre
C) Joseph Nicéphore Niépce
D) Thomas Edison
Correct Answer: A) George Eastman
Explanation: George Eastman developed the first successful photographic film in 1888, making photography more accessible and practical with his Kodak camera.
A) John Harwood
B) Patek Philippe
C) Louis Cartier
D) Ferdinand Berthoud
Correct Answer: A) John Harwood
Explanation: John Harwood invented the first successful mechanical wristwatch in 1923. His design used an automatic winding mechanism to keep the watch running without manual winding.
A) Communication
B) Manufacturing
C) Medicine
D) Entertainment
Correct Answer: C) Medicine
Explanation: The first practical use of the laser was in the field of medicine, particularly in the early 1960s for surgical procedures, thanks to its precision and ability to cut tissue with minimal damage.
A) Wallace Carothers
B) Leo Baekeland
C) August Schering
D) John Wesley Hyatt
Correct Answer: A) Wallace Carothers
Explanation: Wallace Carothers invented nylon, the first synthetic textile, in 1935. Nylon revolutionized the textile industry with its durability and versatility.
A) Luigi Bezzera
B) Melitta Bentz
C) Alfred Peet
D) James Hargreaves
Correct Answer: B) Melitta Bentz
Explanation: Melitta Bentz invented the first practical automatic coffee maker in 1908. Her design improved the brewing process and made coffee preparation more efficient.
A) Albert T. Marshall
B) John Gorrie
C) Willis Carrier
D) Carl von Linde
Correct Answer: C) Willis Carrier
Explanation: Willis Carrier developed the first successful commercial air conditioner in 1902. His invention significantly improved indoor climate control and led to modern air conditioning systems.
A) King Camp Gillette
B) William H. Hinton
C) James B. Swann
D) Jacob Schick
Correct Answer: A) King Camp Gillette
Explanation: King Camp Gillette invented the first successful safety razor in 1901. His design made shaving safer and more convenient with replaceable blades.
A) John Spadaro
B) Albert Marshall
C) James Dyson
D) Josephine Cochrane
Correct Answer: D) Josephine Cochrane
Explanation: Josephine Cochrane invented the first practical modern dishwasher in 1886. Her design was a significant advancement in home appliance technology.
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