Who discovered that blood can be categorized into various Rh factors (positive and negative)? MCQ with Answer and Explanation
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Question #1
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Who discovered that light waves exhibit distinct transverse oscillation directions when passing through tourmaline crystals, establishing Polarization?
Correct Answer: Option D
Explanation:
Bartholin discovered double refraction in Iceland spar, and Malus formalized optical polarization laws by reflection properties.
Bartholin discovered double refraction in Iceland spar, and Malus formalized optical polarization laws by reflection properties.
This question belongs to:
Static General Knowledge
Inventions and Discoveries
Question #2
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Who discovered the first known antibiotic substance produced by soil actinomycetes, Actinomycin?
Correct Answer: Option C
Explanation:
Selman Waksman and his student H. Boyd Woodruff isolated actinomycin in 1940, sparking targeted soil microbe screening programs.
Selman Waksman and his student H. Boyd Woodruff isolated actinomycin in 1940, sparking targeted soil microbe screening programs.
This question belongs to:
Static General Knowledge
Inventions and Discoveries
Question #3
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The law of gas pressure stating that total pressure equals the sum of partial pressures was formulated by whom?
Correct Answer: Option D
Explanation:
John Dalton formulated Dalton's Law of Partial Pressures in 1801 as part of his atmospheric research.
John Dalton formulated Dalton's Law of Partial Pressures in 1801 as part of his atmospheric research.
This question belongs to:
Static General Knowledge
Inventions and Discoveries
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