General Awareness · Science General
Inventors and Scientific Discoveries
4,454 Questions
This hub provides questions related to great inventors and their scientific discoveries. It covers the inventors of the telephone, radio, and microchips, alongside Nobel Prize winners. These facts are crucial for the general awareness section of major competitive exams.
Famous inventionsNobel Prize winnersScientific conceptsKey inventors
Inventors and Scientific Discoveries Questions
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Robert Metcalf
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Wallace Hume Carothers
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George Washington Carver
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W. Gerorge
B
Correct answer
Explanation
Wallace Hume Carothers led the DuPont research team that invented nylon in 1935, marking the first synthetic fiber. Nylon revolutionized textiles and replaced silk in many applications like parachutes and stockings.
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Dennis Ritchie
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James Gosling
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Bjarne Stroustrup
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Rasmus Lerdorf
A
Correct answer
Explanation
Dennis Ritchie created C at Bell Labs in the early 1970s for Unix development. James Gosling created Java, Bjarne Stroustrup created C++, and Rasmus Lerdorf created PHP.
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T. H. Huxley
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Leeuwenhoek
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Rudolf Virchow
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J. C. Bose
A
Correct answer
Explanation
T.H. Huxley famously described protoplasm as the 'physical basis of life' in the 19th century, emphasizing its fundamental role in living organisms. Leeuwenhoek was an early microscopist who discovered microorganisms, while Virchow is known for 'omnis cellula e cellula' (all cells come from cells). J.C. Bose contributed to plant physiology but did not work on protoplasm theory.
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Penicillin
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X-ray
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Streptomycin
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Telephone
A
Correct answer
Explanation
Alexander Fleming discovered penicillin in 1928 from the Penicillium mold, revolutionizing medicine with the first antibiotic. X-rays were discovered by Wilhelm Roentgen, streptomycin was discovered by Selman Waksman, and the telephone was invented by Alexander Graham Bell.
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Marconi
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James Watt
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Thomas Savery
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Wright Brothers
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Shockley
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Pascal
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Sholes
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Waterman
C
Correct answer
Explanation
Christopher Sholes invented the first practical typewriter in 1867, which later evolved into the modern QWERTY keyboard. William Austin Burt had created an earlier typewriter prototype in 1829, but Sholes' version was commercially successful. Shockley worked on transistors, Pascal on calculating machines, and Waterman on fountain pens.
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Edward Jenner
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Joseph Lister
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William Harvey
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Jonon Esals
C
Correct answer
Explanation
William Harvey discovered the circulation of blood in 1628, demonstrating that blood flows through the body in a continuous loop pumped by the heart. Edward Jenner developed the smallpox vaccine, Joseph Lister pioneered antiseptic surgery, and 'Jonon Esals' appears to be a misspelling or error.
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James Arkwright
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James Watt
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William Caxton
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Isaac Newton
C
Correct answer
Explanation
William Caxton introduced the printing press to England around 1476, becoming the first English printer and publisher. James Arkwright was involved in textile manufacturing, James Watt in steam engines, and Isaac Newton was a physicist and mathematician.
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Edward Jenner
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Joseph Lister
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Henry William
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John Sleeman
B
Correct answer
Explanation
Joseph Lister pioneered antiseptic surgery in 1865 by using carbolic acid (phenol) to sterilize surgical instruments and clean wounds, dramatically reducing infection rates. Edward Jenner developed the smallpox vaccine in the late 18th century, not antiseptic techniques.
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Faraday
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Baird
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Edison
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Marconi
B
Correct answer
Explanation
John Logie Baird, a Scottish engineer, demonstrated the first working mechanical television system in 1926. While several inventors contributed to television technology (including Philo Farnsworth with electronic television), Baird is widely credited in general knowledge contexts as the television's inventor.
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Jonas Salk
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Alb E. Sabin
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Selman Waksman
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None of these
A
Correct answer
Explanation
Jonas Salk developed the first successful polio vaccine in 1955, using inactivated virus (IPV). Albert Sabin later developed the oral polio vaccine (OPV). Salk's vaccine was the breakthrough that ended polio epidemics in the United States. Selman Waksman discovered streptomycin, an antibiotic, not a polio vaccine.
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James Watt: Steam Engine
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A.G. Bell: Telephone
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J. L. Baird: Television
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J. Perkins: Penicillin
D
Correct answer
Explanation
James Watt did invent the steam engine, Alexander Graham Bell invented the telephone, and John Logie Baird invented the television. However, penicillin was discovered by Alexander Fleming, not J. Perkins (Perkins is associated with an early refrigeration technique).
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Waterman
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Oscar
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Wilson
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Lazlo Biro
D
Correct answer
Explanation
László Bíró, a Hungarian journalist, invented the modern ballpoint pen in the 1930s. The key innovation was a tiny ball that rolled to distribute ink as it moved across paper. Waterman is associated with fountain pens, while Oscar and Wilson are not associated with pen inventions.
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Balloon
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Bicycle
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Aeroplane
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None of these
C
Correct answer
Explanation
Orville and Wilbur Wright invented, built, and flew the world's first successful motor-operated airplane in 1903. Balloons were invented much earlier by the Montgolfier brothers in 1783.
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Roentgen: X-ray
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Newton: Law of gravitation
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Faraday: Diffusion of gases
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Pasteur: Bacteriology
C
Correct answer
Explanation
Faraday is famous for electromagnetic induction and electrolysis, not diffusion of gases. The other pairs are correct: Roentgen discovered X-rays, Newton formulated gravitation laws, Pasteur founded bacteriology.