Who formulated the Laws of Planetary Motion? MCQ with Answer and Explanation

Question Report Error
Who formulated the Laws of Planetary Motion?
A. Nicolaus Copernicus
B. Johannes Kepler
C. Galileo Galilei
D. Isaac Newton
Answer: Option B
Solution (By JKExamLibrary)
Johannes Kepler formulated the three laws of planetary motion in the early 17th century.
This question belongs to: Static General Knowledge Inventions and Discoveries

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Practice More Inventions and Discoveries Questions

Question #1 Report Error
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. Hendrik Lorentz
B. Albert Michelson and Edward Morley
C. Albert Einstein
D. James Clerk Maxwell
Discuss

Correct Answer: Option B

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
Question #2 Report Error
Who discovered the precise genetic structure layout known as the operon model in bacterial gene regulation?
A. Gregor Mendel
B. Barbara McClintock
C. François Jacob and Jacques Monod
D. James Watson and Francis Crick
Discuss

Correct Answer: Option C

Explanation:
Jacob and Monod mapped the lac operon in E. coli, proving how cells inhibit or promote enzyme production based on nutrient environments.
This question belongs to: Static General Knowledge Inventions and Discoveries
Question #3 Report Error
The periodic table of elements was first proposed in its widely recognized chronological form by whom?
A. John Newlands
B. Antoine Lavoisier
C. Henry Moseley
D. Dmitri Mendeleev
Discuss

Correct Answer: Option D

Explanation:
Dmitri Mendeleev published the first widely recognized periodic table in 1869, arranging elements by atomic mass.
This question belongs to: Static General Knowledge Inventions and Discoveries
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