Alexander Fleming discovered penicillin, the world's first effective antibiotic, in which year? MCQ with Answer and Explanation
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Question #1
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The invention of the common military defensive structure known as Barbed Wire was patented in its definitive commercial form by whom?
Correct Answer: Option B
Explanation:
Joseph Glidden patented the two-wire twisted barb lock mechanism in 1874, changing open-range farming and livestock control.
Joseph Glidden patented the two-wire twisted barb lock mechanism in 1874, changing open-range farming and livestock control.
This question belongs to:
Static General Knowledge
Inventions and Discoveries
Question #2
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Who discovered the presence of the cosmic entity known as the black hole through mathematical solutions to General Relativity equations?
Correct Answer: Option D
Explanation:
Karl Schwarzschild derived the exact solution for spherical non-rotating point mass objects in 1915, outlining the event horizon radius.
Karl Schwarzschild derived the exact solution for spherical non-rotating point mass objects in 1915, outlining the event horizon radius.
This question belongs to:
Static General Knowledge
Inventions and Discoveries
Question #3
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Who discovered the optical law of refraction independently, which relates the angles of incidence and refraction?
Correct Answer: Option D
Explanation:
Willebrord Snellius formulated the law of refraction (Snell's Law) in 1621, determining refractive index constants.
Willebrord Snellius formulated the law of refraction (Snell's Law) in 1621, determining refractive index constants.
This question belongs to:
Static General Knowledge
Inventions and Discoveries
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