Who discovered the presence of cosmic background radiation anisotropy using data from the WMAP satellite instrument? MCQ with Answer and Explanation
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Question #1
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Who discovered the precise value of the physical constant detailing the number of structural units in one mole of material?
Correct Answer: Option C
Explanation:
While the constant is named after Avogadro, Jean Perrin calculated its exact value through experimental tracking of Brownian motion, winning a Nobel Prize.
While the constant is named after Avogadro, Jean Perrin calculated its exact value through experimental tracking of Brownian motion, winning a Nobel Prize.
This question belongs to:
Static General Knowledge
Inventions and Discoveries
Question #2
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The invention of the safety razor with disposable stamped steel blades was introduced by whom?
Correct Answer: Option B
Explanation:
King Camp Gillette patented the safety razor system with cheap, replaceable double-edged blades in 1904.
King Camp Gillette patented the safety razor system with cheap, replaceable double-edged blades in 1904.
This question belongs to:
Static General Knowledge
Inventions and Discoveries
Question #3
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The invention of the common mechanical windshield wiper for automobiles was patented by whom?
Correct Answer: Option D
Explanation:
Mary Anderson patented the manual lever-operated windshield clearing arm in 1903 after watching streetcars struggle in sleet storms.
Mary Anderson patented the manual lever-operated windshield clearing arm in 1903 after watching streetcars struggle in sleet storms.
This question belongs to:
Static General Knowledge
Inventions and Discoveries
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