Who discovered that the planet Jupiter possesses a massive permanent high-pressure cyclonic storm, the Great Red Spot? MCQ with Answer and Explanation

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Who discovered that the planet Jupiter possesses a massive permanent high-pressure cyclonic storm, the Great Red Spot?

A. William Herschel

B. Giovanni Domenico Cassini and Robert Hooke

C. Galileo Galilei

D. Christiaan Huygens

Answer: Option B

Solution (By JKSSB Mock Tests)

Hooke and Cassini recorded spot features on Jupiter in the 1660s using early optical compound scopes.

This question belongs to: Static General Knowledge Inventions and Discoveries

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Who discovered that the chemical element Cadmium is isolated as an impurity inside zinc carbonate mineral ores?

A. Friedrich Stromeyer

B. Martin Heinrich Klaproth

C. Carl Wilhelm Scheele

D. Jöns Jacob Berzelius

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Correct Answer: Option A

Explanation:
Stromeyer discovered cadmium in 1817 while inspecting pharmaceutical zinc oxide samples in Germany.

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Question #2

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The fundamental laws of electric resistance ($V = IR$) were discovered by which physicist?

A. Georg Simon Ohm

B. Alessandro Volta

C. André-Marie Ampère

D. James Watt

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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.

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Question #3

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The chemical element Fluorine was first isolated after many hazardous attempts by which French chemist?

A. Antoine Lavoisier

B. Marie Curie

C. Joseph Louis Gay-Lussac

D. Henri Moissan

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Correct Answer: Option D

Explanation:
Henri Moissan successfully isolated the highly reactive element fluorine in 1886 using electrolysis, winning the 1906 Nobel Prize in Chemistry.

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