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.
Famous inventionsNobel Prize winnersScientific conceptsKey inventors
Inventors and Scientific Discoveries Questions
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C. Babbage
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W.H.Britain
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J.S.Kilby
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Robert Noyce
C
Correct answer
Explanation
Jack Kilby of Texas Instruments is credited with inventing the first integrated circuit in 1958. Robert Noyce independently developed a more practical version using silicon shortly after.
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T.J.Watson Sr.
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Charles Babbage
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John Von Neumann
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Bill Gates
C
Correct answer
Explanation
John Von Neumann is credited with the stored-program concept, where both instructions and data are stored in the same memory space.
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Dijkstra
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Niklaus Writh
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D.Knuth
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Aho
B
Correct answer
Explanation
Niklaus Wirth created the Pascal programming language in 1970. It was designed as a language for teaching structured programming.
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Napier
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Babbage
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Pascal
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Leibnitz
D
Correct answer
Explanation
Gottfried Wilhelm Leibniz invented the Stepped Reckoner in the 17th century, a mechanical calculator capable of performing all four arithmetic operations and square roots.
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was never completed
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having most of ideas of modern computers
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both (1) and (2)
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None of above
C
Correct answer
Explanation
Babbage's Analytical Engine was never completed during his lifetime, but its design included the essential components of a modern computer, such as an ALU, memory, and control flow.
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Frederick Frost Blackman
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Mitchell
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Sachs
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Arnon
D
Correct answer
Explanation
Cyclic photophosphorylation was the term, named by the scientist Arnon. The synthesis of ATP from ADP during light reaction of photosynthesis, is called photophosphorylation.
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Helmont
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Joseph Priestley
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Ingen-Housz
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Jean Senebier
C
Correct answer
Explanation
Ingen-Housz was a Dutch physiologist, biologist and chemist. He is best known for showing that light is essential to photosynthesis and thus having discovered photosynthesis. He also discovered that plants, like animals have cellular respiration.
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Cell was discovered by Mendel.
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Cell was discovered in 1665.
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It was discovered under a simple magnifying device.
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The discovered cells were dead cells.
A
Correct answer
Explanation
Cell was discovered by Robert Hooke in 1665 under a simple magnifying device from a thin slice of cork. These were dead cells.
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Bill Gates
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Paul Allen
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John Herschel
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Douglas Engelbart
D
Correct answer
Explanation
Douglas Engelbart is credited with inventing the computer mouse in the 1960s while working at the Stanford Research Institute. It was famously demonstrated in his 1968 presentation known as The Mother of All Demos.
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Charles Babbage
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Augusta Ada King
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Bill Gates
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Luigi Federico Menabrea
B
Correct answer
Explanation
Ada Lovelace is widely considered the first computer programmer for her work on Charles Babbage's early mechanical general-purpose computer, the Analytical Engine.
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Charles Babbage
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Seymour Cray
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Karel Capek
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Howard Aiken
B
Correct answer
Explanation
Seymour Cray was an American electrical engineer and supercomputer architect who designed a series of computers that were the fastest in the world for decades.
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Howard Hathaway Aiken
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J. Presper Eckert
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John W. Mauchly
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Gottfried Wilhelm Leibniz
A
Correct answer
Explanation
Howard Hathaway Aiken led the team at Harvard that developed the Harvard Mark I, which was an electromechanical computer used during World War II.
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George Boole
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Ada King Lovelace
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David Hilbert
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John von Neumann
D
Correct answer
Explanation
John von Neumann is credited with the von Neumann architecture, which describes a design for a digital computer with parts including a processing unit and a memory unit to store both data and instructions.
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Charles Babbage
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Augusta Ads King
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John Herschel
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Joseph-Marie Jacquard
A
Correct answer
Explanation
Charles Babbage designed the Difference Engine and the Analytical Engine, the latter of which is considered the first design for a general-purpose automatic digital computer.
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George Boole
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Charles Babbage
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John Eckert Jr.
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Howard Hathaway Aiken
C
Correct answer
Explanation
J. Presper Eckert and John W. Mauchly designed and built the ENIAC (Electronic Numerical Integrator and Computer) at the University of Pennsylvania.