General Awareness · Science General
Inventors and Scientific Discoveries
4,616 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.
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Inventors and Scientific Discoveries Questions
Who is widely credited with inventing holography?
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Dennis Gabor
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Yuri Denisyuk
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Emmett Leith
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Juris Upatnieks
A
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Explanation
Dennis Gabor, a Hungarian-British physicist, is recognized as the inventor of holography.
Who wrote the novel (Cryptonomicon), which delves into the history of cryptography and its role in shaping the modern world?
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Neal Stephenson
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William Gibson
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Bruce Sterling
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John Shirley
A
Correct answer
Explanation
Neal Stephenson's (Cryptonomicon) is a historical novel that explores the development of cryptography and its significance in various historical events.
Who introduced the concept of regional anesthesia?
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William Halsted
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Carl Koller
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August Bier
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Paul Ehrlich
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Explanation
August Bier introduced the concept of regional anesthesia in 1898, using cocaine to block nerve conduction in a specific region of the body.
Who developed the first cuffed endotracheal tube?
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Ivan Magill
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Robert Macintosh
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Thomas Ayre
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Frederick Guedel
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Explanation
Ivan Magill developed the first cuffed endotracheal tube in 1928, which significantly improved airway management and reduced the risk of aspiration.
Who developed the laryngeal mask airway (LMA)?
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Archie Brain
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John Nunn
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Brian Ackroyd
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Peter Safar
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Explanation
Archie Brain developed the laryngeal mask airway (LMA) in 1981, providing an alternative to endotracheal intubation for airway management.
Who is credited with inventing the first camera?
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Nicéphore Niépce
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Louis Daguerre
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William Henry Fox Talbot
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George Eastman
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Explanation
Nicéphore Niépce was a French inventor who is credited with taking the first permanent photograph in 1826.
What are some of the key figures in the philosophy of proteomics?
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Hans-Jörg Rheinberger.
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Evelyn Fox Keller.
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Robert Cook-Deegan.
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All of the above.
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Explanation
Some of the key figures in the philosophy of proteomics include Hans-Jörg Rheinberger, Evelyn Fox Keller, and Robert Cook-Deegan.
What are some of the key works in the philosophy of proteomics?
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Hans-Jörg Rheinberger's Toward a History of Epistemic Things: Synthesizing Proteins in the Test Tube.
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Evelyn Fox Keller's Refiguring Life: Metaphors of Twentieth-Century Biology.
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Robert Cook-Deegan's The Gene Wars: Science, Politics, and the Human Genome.
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All of the above.
D
Correct answer
Explanation
Some of the key works in the philosophy of proteomics include Hans-Jörg Rheinberger's Toward a History of Epistemic Things: Synthesizing Proteins in the Test Tube, Evelyn Fox Keller's Refiguring Life: Metaphors of Twentieth-Century Biology, and Robert Cook-Deegan's The Gene Wars: Science, Politics, and the Human Genome.
Who developed the periodic table of elements?
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Dmitri Mendeleev
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John Newlands
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Antoine Lavoisier
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Robert Boyle
A
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Explanation
Dmitri Mendeleev developed the periodic table of elements in 1869, which is a tabular arrangement of chemical elements organized on the basis of their atomic number, electron configuration, and recurring chemical properties.
Who discovered the electron?
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J.J. Thomson
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Ernest Rutherford
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Niels Bohr
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Albert Einstein
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Correct answer
Explanation
J.J. Thomson discovered the electron in 1897 through his experiments with cathode rays. He showed that cathode rays were made up of negatively charged particles, which he called electrons.
Who developed the theory of atomic structure?
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Niels Bohr
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Ernest Rutherford
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J.J. Thomson
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Albert Einstein
A
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Explanation
Niels Bohr developed the theory of atomic structure in 1913, which proposed that electrons orbit the nucleus in discrete energy levels.
Who discovered the neutron?
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James Chadwick
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Ernest Rutherford
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Niels Bohr
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Albert Einstein
A
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Explanation
James Chadwick discovered the neutron in 1932 through his experiments with beryllium and alpha particles. He showed that neutrons were uncharged particles with a mass that was slightly greater than that of a proton.
Who developed the theory of relativity?
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Albert Einstein
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Niels Bohr
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Ernest Rutherford
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J.J. Thomson
A
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Explanation
Albert Einstein developed the theory of relativity in the early 20th century. The theory of relativity is a theory of gravity that explains the relationship between space, time, and matter.
Who discovered the proton?
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Ernest Rutherford
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Niels Bohr
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J.J. Thomson
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Albert Einstein
A
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Explanation
Ernest Rutherford discovered the proton in 1919 through his experiments with alpha particles and nitrogen atoms. He showed that alpha particles could knock protons out of nitrogen atoms.
Who developed the quantum theory of atoms?
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Niels Bohr
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Werner Heisenberg
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Max Planck
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Albert Einstein
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Explanation
Niels Bohr developed the quantum theory of atoms in 1913, which proposed that electrons orbit the nucleus in discrete energy levels. This theory explained the spectrum of light emitted by hydrogen atoms.