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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Question #361
The invention of the common chemical processing method known as the Ostwald Process optimized production of what?
A. Nitric Acid
B. Ammonia
C. Phosphoric Acid
D. Sulfuric Acid
Discuss
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Correct Answer: Option A

Explanation:
Wilhelm Ostwald patented the catalytic oxidation of ammonia over platinum mesh sheets in 1902, securing key munitions chemicals.
This question belongs to: Static General Knowledge Inventions and Discoveries
Question #362
Who discovered that cosmic celestial entities emit radio signals, establishing the branch of Radio Astronomy?
A. Grote Reber
B. Edwin Hubble
C. Guglielmo Marconi
D. Karl Jansky
Discuss
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Correct Answer: Option D

Explanation:
Jansky discovered radio emission noise origins from the galactic center in 1931 using directional rotating antenna arrays at Bell Labs.
This question belongs to: Static General Knowledge Inventions and Discoveries
Question #363
The invention of the common maritime signaling system known as the heliograph was optimized by whom?
A. Benjamin Franklin
B. Guglielmo Marconi
C. Alexander Graham Bell
D. Sir Henry Christopher Mance
Discuss
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Correct Answer: Option D

Explanation:
Mance engineered the specialized flash mirror signaling device in the 1870s for military communications across arid frontier terrain.
This question belongs to: Static General Knowledge Inventions and Discoveries
Question #364
Who discovered that the element Uranium is isolated from pitchblende mineral ores, naming it after a newly found planet?
A. Jöns Jacob Berzelius
B. Martin Heinrich Klaproth
C. Henri Becquerel
D. Carl Wilhelm Scheele
Discuss
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Correct Answer: Option B

Explanation:
Klaproth isolated a uranium compound oxide in 1789, naming it in honor of Herschel's discovery of the planet Uranus.
This question belongs to: Static General Knowledge Inventions and Discoveries
Question #365
The invention of the common household cleaning appliance known as the electric vacuum cleaner layout was patented by whom?
A. Thomas Edison
B. Hubert Cecil Booth and James Murray Spangler
C. Willis Carrier
D. Alva Fisher
Discuss
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Correct Answer: Option B

Explanation:
Booth invented the large motorized vacuum pump rig in 1901, and Spangler patented the portable fan-and-bag layout which Hoover later commercialized.
This question belongs to: Static General Knowledge Inventions and Discoveries
Question #366
Who discovered that atomic particle paths can be tracked via condensation trails inside gas chambers, establishing the Cloud Chamber?
A. J.J. Thomson
B. Ernest Rutherford
C. Robert Millikan
D. Charles Thomson Rees Wilson
Discuss
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Correct Answer: Option D

Explanation:
C.T.R. Wilson invented the cloud chamber in 1911 to study cloud formations, which became an invaluable tool for nuclear tracking and cosmic ray discoveries.
This question belongs to: Static General Knowledge Inventions and Discoveries
Question #367
The invention of the common digital computer operating memory layout known as the Virtual Memory system was pioneered where?
A. Xerox PARC
B. University of Manchester on the Atlas computer project
C. Stanford University
D. IBM Laboratories
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Correct Answer: Option B

Explanation:
The Atlas computing development team implemented structural hardware address translation systems in 1959 to pool core and drum memories.
This question belongs to: Static General Knowledge Inventions and Discoveries
Question #368
Who discovered that biological chemical energy transfers are regulated by specific high-energy nucleotide molecules called ATP?
A. Eduard Buchner
B. Karl Lohmann
C. Fritz Lipmann
D. Hans Krebs
Discuss
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Correct Answer: Option B

Explanation:
Karl Lohmann isolated Adenosine Triphosphate from muscle tissues in 1929, identifying it as the universal intracellular energy currency.
This question belongs to: Static General Knowledge Inventions and Discoveries
Question #369
The invention of the common automotive safety equipment known as the three-point seatbelt was patented by whom?
A. Karl Benz
B. Nils Bohlin for Volvo
C. Henry Ford
D. Garrett Morgan
Discuss
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Correct Answer: Option B

Explanation:
Swedish engineer Nils Bohlin developed the modern cross-lap safety harness configuration in 1959, saving countless lives across traffic boundaries.
This question belongs to: Static General Knowledge Inventions and Discoveries
Question #370
Who discovered that light waves produce alternating dark and bright line bands when passing through two adjacent slits, establishing interference?
A. Thomas Young
B. Isaac Newton
C. Christiaan Huygens
D. Augustin Fresnel
Discuss
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Correct Answer: Option A

Explanation:
Thomas Young conducted his famous Double-Slit Experiment in 1801, providing strong evidence for the wave theory of light.
This question belongs to: Static General Knowledge Inventions and Discoveries
Question #371
The invention of the common mechanical device known as the industrial centrifugal cream separator was patented by whom?
A. Cyrus McCormick
B. Eli Whitney
C. James Watt
D. Gustaf de Laval
Discuss
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Correct Answer: Option D

Explanation:
De Laval patented the high-speed continuous centrifugal cream separator in 1878, streamlining commercial dairy production.
This question belongs to: Static General Knowledge Inventions and Discoveries
Question #372
Who discovered that the chemical element Vanadium exists within iron slag residues, verifying its modern entry?
A. Andrés Manuel del Río
B. Martin Klaproth
C. Nils Gabriel Sefström
D. Jöns Jacob Berzelius
Discuss
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Correct Answer: Option C

Explanation:
Del Río noticed it early in Mexico ('erythronium'), but Sefström isolated and confirmed the element in Swedish iron ores in 1830.
This question belongs to: Static General Knowledge Inventions and Discoveries
Question #373
The invention of the common computing tracking protocol known as the Ethernet local network architecture was co-developed by whom?
A. Douglas Engelbart
B. Tim Berners-Lee
C. Vint Cerf
D. Robert Metcalfe
Discuss
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Correct Answer: Option D

Explanation:
Robert Metcalfe co-invented Ethernet at Xerox PARC in 1973, linking internal computer terminals across localized hardware networks.
This question belongs to: Static General Knowledge Inventions and Discoveries
Question #374
Who discovered that biological inheritance displays specific mapping coordinates relative to chromosome linkage structures?
A. James Watson
B. Thomas Hunt Morgan and Alfred Sturtevant
C. Gregor Mendel
D. Francis Crick
Discuss
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Correct Answer: Option B

Explanation:
Sturtevant, a student of Morgan, constructed the world's first genetic map in 1911 by tracking crossover frequencies in fruit flies.
This question belongs to: Static General Knowledge Inventions and Discoveries
Question #375
The invention of the common kitchen refrigeration insulation system known as the domestic electric refrigerator was scaled by which engineer?
A. Willis Carrier
B. Thomas Edison
C. Fred W. Wolf and Nathaniel B. Wales
D. James Dewar
Discuss
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Correct Answer: Option C

Explanation:
Wolf invented early air-cooled attachment refrigerator units in 1913, and Wales engineered units that Kelvinator mass-marketed.
This question belongs to: Static General Knowledge Inventions and Discoveries
Question #376
Who discovered that atomic radioactive decay emits discrete high-energy electromagnetic waves named 'Gamma Rays'?
A. Henri Becquerel
B. Paul Villard
C. Marie Curie
D. Ernest Rutherford
Discuss
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Correct Answer: Option B

Explanation:
French chemist Paul Villard discovered gamma radiation in 1900 while studying uranium emission shielding paths.
This question belongs to: Static General Knowledge Inventions and Discoveries
Question #377
The invention of the common electronic computational methodology known as microprogramming was proposed by whom?
A. Maurice Wilkes
B. Charles Babbage
C. John von Neumann
D. Alan Turing
Discuss
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Correct Answer: Option A

Explanation:
Wilkes formulated microprogramming in 1951 to simplify computer central processing unit development matrix layers.
This question belongs to: Static General Knowledge Inventions and Discoveries
Question #378
Who discovered that the chemical element Magnesium is isolated as a distinct metal element via mercury amalgamation?
A. Joseph Black
B. Humphry Davy
C. Antoine Lavoisier
D. Carl Wilhelm Scheele
Discuss
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Correct Answer: Option B

Explanation:
Black identified magnesium compounds early, but Sir Humphry Davy isolated pure metallic magnesium via electrochemical processing in 1808.
This question belongs to: Static General Knowledge Inventions and Discoveries
Question #379
The invention of the common household cooking device known as the Microwave Oven was an accidental discovery by whom?
A. Robert Watson-Watt
B. Thomas Edison
C. Theodore Maiman
D. Percy Spencer
Discuss
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Correct Answer: Option D

Explanation:
Spencer noticed a candy bar melted in his pocket in 1945 while standing near an active military radar magnetron vacuum tube.
This question belongs to: Static General Knowledge Inventions and Discoveries
Question #380
Who discovered that light velocity shifts slightly depending on whether it moves parallel or perpendicular to the Earth's orbit, leading to the famous null result?
A. Albert Einstein
B. Hendrik Lorentz
C. James Clerk Maxwell
D. Albert Michelson and Edward Morley
Discuss
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Correct Answer: Option D

Explanation:
The Michelson-Morley experiment in 1887 found no evidence of the hypothetical luminiferous aether, laying the ground for relativity.
This question belongs to: Static General Knowledge Inventions and Discoveries

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