Who invented the liquid-fueled rocket engine, launching the world's first successful prototype in 1926? MCQ with Answer and Explanation

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Who invented the liquid-fueled rocket engine, launching the world's first successful prototype in 1926?

A. Hermann Oberth

B. Konstantin Tsiolkovsky

C. Wernher von Braun

D. Robert Goddard

Answer: Option D

Solution (By JKSSB Mock Tests)

Robert H. Goddard launched the first liquid-fueled rocket (using gasoline and liquid oxygen) in Auburn, Massachusetts.

This question belongs to: Static General Knowledge Inventions and Discoveries

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Who discovered that atomic structure configurations present discrete filling layers regulated by spin exclusion principles?

A. Wolfgang Pauli

B. Erwin Schrödinger

C. Werner Heisenberg

D. Niels Bohr

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Correct Answer: Option A

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 #2

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Who discovered the exact structural formula of the complex molecule Vitamin B12, using advanced X-ray crystallography?

A. Rosalind Franklin

B. Barbara McClintock

C. Marie Curie

D. Dorothy Hodgkin

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Correct Answer: Option D

Explanation:
Dorothy Hodgkin determined the atomic structures of penicillin, vitamin B12, and insulin, winning the 1964 Nobel Prize in Chemistry.

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Question #3

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The concept of Continental Drift was proposed by which scientist in 1912?

A. Harry Hess

B. James Hutton

C. Charles Lyell

D. Alfred Wegener

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Correct Answer: Option D

Explanation:
Alfred Wegener published the hypothesis that continents were once joined in a supercontinent named Pangaea and drifted apart.

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