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 #61
Who invented the first thermionic valve (vacuum tube diode) in 1904?
A. John Ambrose Fleming
B. Lee de Forest
C. Nikola Tesla
D. Thomas Edison
Discuss
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Correct Answer: Option A

Explanation:
John Ambrose Fleming invented the oscillation valve, the first vacuum tube diode, which transformed radio technology.
This question belongs to: Static General Knowledge Inventions and Discoveries
Question #62
The fundamental laws of electric resistance ($V = IR$) were discovered by which physicist?
A. Georg Simon Ohm
B. André-Marie Ampère
C. Alessandro Volta
D. James Watt
Discuss
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Correct Answer: Option A

Explanation:
Georg Simon Ohm discovered the direct proportionality between voltage and current across a conductor, known as Ohm's Law.
This question belongs to: Static General Knowledge Inventions and Discoveries
Question #63
Who invented the modern electronic television system utilizing a cathode ray tube (CRT)?
A. Thomas Edison
B. Guglielmo Marconi
C. John Logie Baird
D. Philo Farnsworth
Discuss
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Correct Answer: Option D

Explanation:
Philo Farnsworth invented the first fully functional all-electronic television system with an image dissector camera tube.
This question belongs to: Static General Knowledge Inventions and Discoveries
Question #64
The cosmic microwave background radiation, confirming the Big Bang theory, was discovered by whom?
A. Arno Penzias and Robert Wilson
B. Stephen Hawking
C. Albert Einstein
D. Edwin Hubble
Discuss
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Correct Answer: Option A

Explanation:
Arno Penzias and Robert Wilson accidentally discovered cosmic microwave background radiation in 1964, winning a Nobel Prize.
This question belongs to: Static General Knowledge Inventions and Discoveries
Question #65
Who discovered the element Sodium through the process of electrolysis?
A. Humphry Davy
B. Jöns Jacob Berzelius
C. Antoine Lavoisier
D. Michael Faraday
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Correct Answer: Option A

Explanation:
Sir Humphry Davy isolated sodium, potassium, calcium, and magnesium using electrolysis in the early 1800s.
This question belongs to: Static General Knowledge Inventions and Discoveries
Question #66
The invention of the machine gun is historically associated with which American inventor?
A. Oliver Winchester
B. John Browning
C. Richard Gatling
D. Samuel Colt
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Correct Answer: Option C

Explanation:
Richard Gatling invented the Gatling gun, the first highly successful rapid-fire multi-barrel machine gun, during the American Civil War.
This question belongs to: Static General Knowledge Inventions and Discoveries
Question #67
Who discovered the protozoan parasite causing Malaria in human red blood cells?
A. Ronald Ross
B. Charles Alphonse Laveran
C. Louis Pasteur
D. Robert Koch
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Correct Answer: Option B

Explanation:
Charles Alphonse Laveran discovered the malaria parasite in 1880, winning the Nobel Prize in 1907. Sir Ronald Ross later discovered that mosquitoes transmit it.
This question belongs to: Static General Knowledge Inventions and Discoveries
Question #68
Who invented the first operational stethoscope in 1816?
A. Joseph Lister
B. Louis Pasteur
C. René Laennec
D. Edward Jenner
Discuss
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Correct Answer: Option C

Explanation:
René Laennec invented the acoustic stethoscope because he felt uncomfortable placing his ear directly on female patients' chests.
This question belongs to: Static General Knowledge Inventions and Discoveries
Question #69
The concept of absolute zero temperature and the thermodynamic scale was discovered by whom?
A. Anders Celsius
B. Daniel Gabriel Fahrenheit
C. Lord Kelvin
D. James Joule
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Correct Answer: Option C

Explanation:
William Thomson, later Lord Kelvin, proposed the absolute thermodynamic scale of temperature in 1848.
This question belongs to: Static General Knowledge Inventions and Discoveries
Question #70
Who is credited with the invention of the submarine 'Turtle', used in military action?
A. John Philip Holland
B. David Bushnell
C. Cornelis Drebbel
D. Robert Fulton
Discuss
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Correct Answer: Option B

Explanation:
David Bushnell invented the Turtle in 1775, the first submarine ever used in combat.
This question belongs to: Static General Knowledge Inventions and Discoveries
Question #71
Who discovered the vaccine for Rabies?
A. Jonas Salk
B. Edward Jenner
C. Louis Pasteur
D. Robert Koch
Discuss
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Correct Answer: Option C

Explanation:
Louis Pasteur developed the first vaccine against rabies by cultivating the virus in rabbits and drying the affected nerve tissue.
This question belongs to: Static General Knowledge Inventions and Discoveries
Question #72
The law of gas pressure stating that total pressure equals the sum of partial pressures was formulated by whom?
A. Joseph Louis Gay-Lussac
B. John Dalton
C. Jacques Charles
D. Robert Boyle
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Correct Answer: Option B

Explanation:
John Dalton formulated Dalton's Law of Partial Pressures in 1801 as part of his atmospheric research.
This question belongs to: Static General Knowledge Inventions and Discoveries
Question #73
Who invented the fountain pen with an efficient ink capillary feed mechanism in 1884?
A. Lewis Waterman
B. László Bíró
C. John Loud
D. William Thompson
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Correct Answer: Option A

Explanation:
Lewis Edson Waterman patented the first practical fountain pen with a reliable ink feed mechanism.
This question belongs to: Static General Knowledge Inventions and Discoveries
Question #74
Who discovered that white light is a mixture of seven fundamental component colors using a prism?
A. Thomas Young
B. Christian Huygens
C. James Clerk Maxwell
D. Isaac Newton
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Correct Answer: Option D

Explanation:
Sir Isaac Newton proved through prism experiments that white light decomposes into a continuous spectrum of colors.
This question belongs to: Static General Knowledge Inventions and Discoveries
Question #75
The ballistic missile (V-2 rocket) was primarily invented by which scientist?
A. Robert Goddard
B. Wernher von Braun
C. Hermann Oberth
D. Konstantin Tsiolkovsky
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Correct Answer: Option B

Explanation:
Wernher von Braun was the leading figure in the development of the V-2 rocket in Nazi Germany and later NASA space vehicles.
This question belongs to: Static General Knowledge Inventions and Discoveries
Question #76
Who discovered the antibiotic Streptomycin, the first effective cure for tuberculosis, winning a Nobel Prize in 1952?
A. Alexander Fleming
B. Howard Florey
C. Selman Waksman
D. Edward Abraham
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Correct Answer: Option C

Explanation:
Selman Waksman discovered several antibiotics produced by soil microbes, including streptomycin.
This question belongs to: Static General Knowledge Inventions and Discoveries
Question #77
Who invented the modern safety pin in 1849?
A. Eli Whitney
B. Walter Hunt
C. Isaac Singer
D. Elias Howe
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Correct Answer: Option B

Explanation:
Walter Hunt invented the safety pin in 1849 and sold the patent rights for just 400 dollars to pay off a debt.
This question belongs to: Static General Knowledge Inventions and Discoveries
Question #78
The first accurate measurement of the speed of light using astronomical observations of Jupiter's moons was performed by whom?
A. Léon Foucault
B. Albert Michelson
C. Armand Fizeau
D. Ole Rømer
Discuss
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Correct Answer: Option D

Explanation:
Danish astronomer Ole Rømer made the first quantitative measurement of the speed of light in 1676.
This question belongs to: Static General Knowledge Inventions and Discoveries
Question #79
Who invented the alkaline storage battery and the phonograph?
A. Alessandro Volta
B. Nikola Tesla
C. Michael Faraday
D. Thomas Edison
Discuss
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Correct Answer: Option D

Explanation:
Thomas Alva Edison developed the phonograph in 1877 and later engineered the commercial alkaline storage battery.
This question belongs to: Static General Knowledge Inventions and Discoveries
Question #80
Who discovered the radioactive elements Radium and Polonium?
A. Otto Hahn
B. Ernest Rutherford
C. Henri Becquerel
D. Marie and Pierre Curie
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Correct Answer: Option D

Explanation:
Marie Skłodowska-Curie and her husband Pierre isolated polonium and radium from pitchblende ore in 1898.
This question belongs to: Static General Knowledge Inventions and Discoveries

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