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. Wernher von Braun
B. James Van Allen
C. Robert Goddard
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 Venus has phases similar to the Moon, supporting the heliocentric theory?
A. Tycho Brahe
B. Johannes Kepler
C. Galileo Galilei
D. Nicolaus Copernicus
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Correct Answer: Option C

Explanation:
Galileo Galilei observed the phases of Venus in 1610 using his telescope, confirming that it orbits the Sun.
This question belongs to: Static General Knowledge Inventions and Discoveries
Question #2
Who discovered that gases diffuse at specific rates relative to temperature variations, formalizing the Charles's Law?
A. Jacques Charles and Joseph Louis Gay-Lussac
B. Amadeo Avogadro
C. Robert Boyle
D. John Dalton
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Correct Answer: Option A

Explanation:
Jacques Charles collected gas expansion data in the 1780s, which Gay-Lussac later published as a direct linear volume-temperature relation.
This question belongs to: Static General Knowledge Inventions and Discoveries
Question #3
The invention of the common chemical manufacturing system known as the Chamber Process optimized production of what?
A. Nitric Acid
B. Sulfuric Acid
C. Soda Ash
D. Bleaching Powder
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Correct Answer: Option B

Explanation:
John Roebuck patented the lead-chamber method in 1746, enabling the mass production of sulfuric acid, a key chemical of the Industrial Revolution.
This question belongs to: Static General Knowledge Inventions and Discoveries
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