Who discovered the true nature of combustion as an oxidation process, disproving the phlogiston theory? MCQ with Answer and Explanation

Question
Who discovered the true nature of combustion as an oxidation process, disproving the phlogiston theory?
A. John Dalton
B. Joseph Priestley
C. Antoine Lavoisier
D. Robert Boyle
Answer: Option C
Solution (By JKSSB Mock Tests)
Antoine Lavoisier demonstrated that combustion involves elements chemically combining with oxygen.
This question belongs to: Static General Knowledge Inventions and Discoveries
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Question #1
Who discovered that stable elements possess unique integer identifiers based on X-ray emission frequencies, restructuring atomic numbers?
A. J.J. Thomson
B. Ernest Rutherford
C. Dmitri Mendeleev
D. Henry Moseley
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Correct Answer: Option D

Explanation:
Moseley proved that ordering chemical elements by nuclear charge (atomic number) resolved inconsistencies in Mendeleev's mass-ordered layout.
This question belongs to: Static General Knowledge Inventions and Discoveries
Question #2
Who discovered that light waves exhibit distinct transverse oscillation directions when passing through tourmaline crystals, establishing Polarization?
A. Thomas Young
B. James Clerk Maxwell
C. Etienne-Louis Malus and Erasmus Bartholin
D. Isaac Newton
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Correct Answer: Option C

Explanation:
Bartholin discovered double refraction in Iceland spar, and Malus formalized optical polarization laws by reflection properties.
This question belongs to: Static General Knowledge Inventions and Discoveries
Question #3
Who discovered that the velocity of falling objects is completely independent of their weight in a vacuum?
A. Isaac Newton
B. Aristotle
C. Johannes Kepler
D. Galileo Galilei
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Correct Answer: Option D

Explanation:
Galileo mathematically disproved Aristotle's weight-proportional velocity model via rigorous acceleration measurements down inclined tracks.
This question belongs to: Static General Knowledge Inventions and Discoveries
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