Who discovered that biological enzymes can perform structural transformations outside of living cell containers, establishing cell-free fermentation? MCQ with Answer and Explanation
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Question #1
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Who discovered that the speed of light is constant in all inertial frames of reference, forming the basis of Special Relativity?
Correct Answer: Option B
Explanation:
Albert Einstein postulated that the speed of light in a vacuum is invariant, irrespective of the motion of the source or observer.
Albert Einstein postulated that the speed of light in a vacuum is invariant, irrespective of the motion of the source or observer.
This question belongs to:
Static General Knowledge
Inventions and Discoveries
Question #2
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The invention of the iconic acoustic phonograph recording flat disc format (Gramophone) was developed by whom?
Correct Answer: Option D
Explanation:
Emile Berliner introduced flat zinc discs with lateral groove tracking in 1887, outperforming Edison's hollow wax storage cylinders.
Emile Berliner introduced flat zinc discs with lateral groove tracking in 1887, outperforming Edison's hollow wax storage cylinders.
This question belongs to:
Static General Knowledge
Inventions and Discoveries
Question #3
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The invention of the common domestic non-stick cookware surface pan coating was developed using which material?
Correct Answer: Option D
Explanation:
French engineer Marc Grégoire developed the process to bond Teflon to aluminum pan matrices, founding the Tefal brand.
French engineer Marc Grégoire developed the process to bond Teflon to aluminum pan matrices, founding the Tefal brand.
This question belongs to:
Static General Knowledge
Inventions and Discoveries
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