The invention of the iconic acoustic phonograph recording flat disc format (Gramophone) was developed by whom? MCQ with Answer and Explanation
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Question #1
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The discovery of the first gas giant exoplanet orbiting a sun-like star (51 Pegasi b) was made by whom?
Correct Answer: Option A
Explanation:
Michel Mayor and Didier Queloz discovered 51 Pegasi b in 1995 using highly precise radial velocity measurements, winning a Nobel Prize.
Michel Mayor and Didier Queloz discovered 51 Pegasi b in 1995 using highly precise radial velocity measurements, 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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Who invented the modern air conditioning system to control indoor temperature and humidity levels in 1902?
Correct Answer: Option D
Explanation:
Willis Carrier designed the first mechanical air conditioning apparatus to solve humidity problems inside a printing plant.
Willis Carrier designed the first mechanical air conditioning apparatus to solve humidity problems inside a printing plant.
This question belongs to:
Static General Knowledge
Inventions and Discoveries
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