Inventions and Discoveries MCQs

Static General Knowledge

Inventions and Discoveries MCQs

Practice Inventions and Discoveries MCQs with answers and detailed explanations covering famous inventors, scientific discoveries, technological innovations, important inventions, groundbreaking research, Nobel-winning discoveries and contributions to science and technology frequently asked in SSC, Railway, Banking, UPSC, JKSSB, Police, Defence, Teaching and other competitive examinations.

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Page 17 of 21
Question #321
The invention of the common domestic non-stick cookware surface pan coating was developed using which material?
A. Bakelite
B. PTFE (Teflon) by Marc Grégoire
C. Kevlar
D. Nylon
Discuss
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Correct Answer: Option B

Explanation:
French engineer Marc Grégoire developed the process to bond Teflon to aluminum pan matrices, founding the Tefal brand.
This question belongs to: Static General Knowledge Inventions and Discoveries
Question #322
Who discovered that the velocity of light transitions through changing gravitational coordinates, establishing the gravitational redshift?
A. Isaac Newton
B. Albert Einstein
C. Arthur Eddington
D. Edwin Hubble
Discuss
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Correct Answer: Option B

Explanation:
Einstein's General Theory of Relativity predicted that photons lose energy and shift toward lower frequencies when climbing out of a gravitational well.
This question belongs to: Static General Knowledge Inventions and Discoveries
Question #323
The invention of the common electrical structural device known as the coaxial cable was patented in its modern form by whom?
A. Nikola Tesla
B. Lloyd Espenschied and Herman Affel
C. Alexander Graham Bell
D. Michael Faraday
Discuss
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Correct Answer: Option B

Explanation:
Espenschied and Affel engineered the concentric dual-conductor configuration at Bell Labs in 1929 for high-frequency radio networks.
This question belongs to: Static General Knowledge Inventions and Discoveries
Question #324
Who discovered that elements display unique crystalline patterns when rapidly frozen from molten metal matrices, founding physical Metallurgy?
A. Henry Clifton Sorby
B. Dmitri Mendeleev
C. Henry Bessemer
D. Antoine Lavoisier
Discuss
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Correct Answer: Option A

Explanation:
Sorby applied microscopic analysis to polished iron and steel samples, establishing microstructure phase boundaries.
This question belongs to: Static General Knowledge Inventions and Discoveries
Question #325
The invention of the common mechanical device known as the automobile automatic transmission assembly was engineered by whom?
A. Karl Benz
B. Rudolf Diesel
C. Henry Ford
D. Earl Thompson and the General Motors team
Discuss
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Correct Answer: Option D

Explanation:
Thompson designed the 'Hydra-Matic' system, which was introduced by Oldsmobile in 1939 as the first mass-market automatic transmission.
This question belongs to: Static General Knowledge Inventions and Discoveries
Question #326
Who discovered the precise value of the physical constant detailing the number of structural units in one mole of material?
A. Jean Perrin
B. Max Planck
C. Amedeo Avogadro
D. John Dalton
Discuss
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Correct Answer: Option A

Explanation:
While the constant is named after Avogadro, Jean Perrin calculated its exact value through experimental tracking of Brownian motion, winning a Nobel Prize.
This question belongs to: Static General Knowledge Inventions and Discoveries
Question #327
The invention of the common medical diagnostic device known as the blood pressure cuff (Sphygmomanometer) was optimized by whom?
A. René Laennec
B. Willem Einthoven
C. Scipione Riva-Rocci and Harvey Cushing
D. Joseph Lister
Discuss
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Correct Answer: Option C

Explanation:
Riva-Rocci introduced the mercury arm-cuff design in 1896, and neurosurgeon Harvey Cushing popularized it globally.
This question belongs to: Static General Knowledge Inventions and Discoveries
Question #328
Who discovered that atomic structure configurations present discrete filling layers regulated by spin exclusion principles?
A. Niels Bohr
B. Erwin Schrödinger
C. Wolfgang Pauli
D. Werner Heisenberg
Discuss
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Correct Answer: Option C

Explanation:
The Pauli Exclusion Principle states that no two electrons in an atom can occupy the exact same quantum state simultaneously.
This question belongs to: Static General Knowledge Inventions and Discoveries
Question #329
The invention of the common computing peripheral device known as the inkjet print mechanism was developed by which companies?
A. IBM
B. Canon and Hewlett-Packard teams
C. Xerox
D. Apple
Discuss
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Correct Answer: Option B

Explanation:
Independent thermal bubble tracking research by Canon and HP in the late 1970s led to modern consumer inkjet printing.
This question belongs to: Static General Knowledge Inventions and Discoveries
Question #330
Who discovered that the planet Neptune possesses a massive dark storm configuration known as the Great Dark Spot?
A. William Herschel
B. Voyager 2 NASA space probe team
C. Urbain Le Verrier
D. Galileo Galilei
Discuss
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Correct Answer: Option B

Explanation:
The Voyager 2 planetary flyby in 1989 captured the first detailed atmospheric images of Neptune's large southern dark storm vortex.
This question belongs to: Static General Knowledge Inventions and Discoveries
Question #331
The invention of the common chemical manufacturing system known as the Contact Process optimized production of what?
A. Ammonia
B. Hydrochloric Acid
C. Nitric Acid
D. Sulfuric Acid
Discuss
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Correct Answer: Option D

Explanation:
Peregrine Phillips patented the contact process in 1831, using platinum catalysts to convert sulfur dioxide into sulfur trioxide.
This question belongs to: Static General Knowledge Inventions and Discoveries
Question #332
Who discovered that certain types of organic crystals display liquid fluid mobility while maintaining optical structural alignment, founding Liquid Crystals?
A. Leo Baekeland
B. Justus von Liebig
C. Friedrich Reinitzer
D. Otto Lehmann
Discuss
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Correct Answer: Option C

Explanation:
Austrian botanist Reinitzer discovered the distinct dual melting profile of cholesteryl benzoate in 1888.
This question belongs to: Static General Knowledge Inventions and Discoveries
Question #333
The invention of the common mechanical device known as the automated teller machine (ATM) was patented by whom?
A. Douglas Engelbart
B. John Shepherd-Barron and Don Wetzel
C. Tim Berners-Lee
D. Alan Turing
Discuss
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Correct Answer: Option B

Explanation:
Shepherd-Barron deployed early mechanical paper-voucher ATMs for Barclays Bank in London in 1967.
This question belongs to: Static General Knowledge Inventions and Discoveries
Question #334
Who discovered that the element Beryllium is isolated from emerald and beryl crystal ores?
A. Martin Heinrich Klaproth
B. Jöns Jacob Berzelius
C. Louis-Nicolas Vauquelin
D. Humphry Davy
Discuss
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Correct Answer: Option C

Explanation:
Vauquelin discovered beryllium oxide in 1798 after chemical analysis of distinct mineral beryl matrix samples.
This question belongs to: Static General Knowledge Inventions and Discoveries
Question #335
The invention of the common household device known as the electric food blender was developed by whom?
A. Stephen Poplawski
B. Thomas Edison
C. Alva Fisher
D. George Schneider
Discuss
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Correct Answer: Option A

Explanation:
Poplawski patented the bottom-motor container cutting blender mechanism in 1922 to prepare fountain soda drinks.
This question belongs to: Static General Knowledge Inventions and Discoveries
Question #336
Who discovered that magnetic fields can split atomic spectral emission lines, a phenomenon known as the Zeeman Effect?
A. Johannes Stark
B. Hendrik Lorentz
C. Pieter Zeeman
D. Max Planck
Discuss
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Correct Answer: Option C

Explanation:
Zeeman discovered the magnetic line splitting in 1896, which Lorentz explained theoretically, earning them a shared 1902 Nobel Prize.
This question belongs to: Static General Knowledge Inventions and Discoveries
Question #337
The invention of the common military defensive structure known as Barbed Wire was patented in its definitive commercial form by whom?
A. Eli Whitney
B. Cyrus McCormick
C. Joseph Glidden
D. John Deere
Discuss
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Correct Answer: Option C

Explanation:
Joseph Glidden patented the two-wire twisted barb lock mechanism in 1874, changing open-range farming and livestock control.
This question belongs to: Static General Knowledge Inventions and Discoveries
Question #338
Who discovered that certain types of biological viruses infect and replicate exclusively inside bacterial cell hosts, establishing 'Bacteriophages'?
A. Robert Koch
B. Dmitri Ivanovsky
C. Frederick Twort and Félix d'Hérelle
D. Louis Pasteur
Discuss
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Correct Answer: Option C

Explanation:
Twort and d'Hérelle independently isolated filterable bacterial lysis agents, establishing early phage therapeutic concepts.
This question belongs to: Static General Knowledge Inventions and Discoveries
Question #339
The invention of the common electronic system known as the microprocessor architecture layout was scaled by which engineer?
A. Alan Turing
B. Federico Faggin, Ted Hoff, and Stanley Mazor
C. John von Neumann
D. Jack Kilby
Discuss
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Correct Answer: Option B

Explanation:
Faggin led the design layout of the Intel 4004 silicon chip in 1971, implementing full computing logic inside a single component.
This question belongs to: Static General Knowledge Inventions and Discoveries
Question #340
Who discovered that gases diffuse at specific rates relative to temperature variations, formalizing the Charles's Law?
A. Jacques Charles and Joseph Louis Gay-Lussac
B. John Dalton
C. Robert Boyle
D. Amadeo Avogadro
Discuss
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Correct Answer: Option A

Explanation:
Jacques Charles collected gas expansion data in the 1780s, which Gay-Lussac later published as a direct linear volume-temperature relation.
This question belongs to: Static General Knowledge Inventions and Discoveries

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