Who discovered that light waves travel as transverse vibrations, contradicting the longitudinal wave model? MCQ with Answer and Explanation
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Question #1
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Who discovered that the speed of chemical reactions increases when specific non-consumed agents are added, coining the term 'Catalysis'?
Correct Answer: Option D
Explanation:
Berzelius identified chemical catalytic force in 1835, which Ostwald later formalized thermodynamically.
Berzelius identified chemical catalytic force in 1835, which Ostwald later formalized thermodynamically.
This question belongs to:
Static General Knowledge
Inventions and Discoveries
Question #2
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Who invented the first operational stethoscope in 1816?
Correct Answer: Option B
Explanation:
René Laennec invented the acoustic stethoscope because he felt uncomfortable placing his ear directly on female patients' chests.
René Laennec invented the acoustic stethoscope because he felt uncomfortable placing his ear directly on female patients' chests.
This question belongs to:
Static General Knowledge
Inventions and Discoveries
Question #3
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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
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