Who discovered the existence of the Van Allen Radiation Belts surrounding the Earth? MCQ with Answer and Explanation

Question
Who discovered the existence of the Van Allen Radiation Belts surrounding the Earth?
A. Robert Goddard
B. James Van Allen
C. Wernher von Braun
D. Carl Sagan
Answer: Option B
Solution (By JKSSB Mock Tests)
James Van Allen discovered the zones of trapped charged particles around Earth using data from the Explorer 1 satellite in 1958.
This question belongs to: Static General Knowledge Inventions and Discoveries
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Question #1
Who discovered that the planet Saturn has a prominent ring system and its largest moon, Titan?
A. Galileo Galilei
B. William Herschel
C. Christiaan Huygens
D. Giovanni Cassini
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Correct Answer: Option C

Explanation:
Christiaan Huygens correctly identified Saturn's rings in 1655 and discovered its largest moon, Titan.
This question belongs to: Static General Knowledge Inventions and Discoveries
Question #2
The invention of the mechanical printing press was dramatically optimized by Gutenberg using an alloy of which metals?
A. Copper and Zinc
B. Gold and Silver
C. Lead, Tin, and Antimony
D. Iron and Carbon
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Correct Answer: Option C

Explanation:
Gutenberg formulated a specialized type metal alloy that melted at low temperatures but resisted high casting pressures.
This question belongs to: Static General Knowledge Inventions and Discoveries
Question #3
Who discovered that light waves produce alternating dark and bright line bands when passing through two adjacent slits, establishing interference?
A. Christiaan Huygens
B. Isaac Newton
C. Augustin Fresnel
D. Thomas Young
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Correct Answer: Option D

Explanation:
Thomas Young conducted his famous Double-Slit Experiment in 1801, providing strong evidence for the wave theory of light.
This question belongs to: Static General Knowledge Inventions and Discoveries
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