Who discovered the law of gas volume variations under changing pressures, known as the first gas law? MCQ with Answer and Explanation
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Question #1
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Who discovered the primary biological pattern detailing that DNA nucleotide bases match in specific pairs ($A=T, G=C$)?
Correct Answer: Option D
Explanation:
Chargaff's Rules established the 1:1 stoichiometric ratios of purines to pyrimidines, providing a key clue for Watson and Crick's model.
Chargaff's Rules established the 1:1 stoichiometric ratios of purines to pyrimidines, providing a key clue for Watson and Crick's model.
This question belongs to:
Static General Knowledge
Inventions and Discoveries
Question #2
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The invention of the common maritime signaling system known as the heliograph was optimized by whom?
Correct Answer: Option A
Explanation:
Mance engineered the specialized flash mirror signaling device in the 1870s for military communications across arid frontier terrain.
Mance engineered the specialized flash mirror signaling device in the 1870s for military communications across arid frontier terrain.
This question belongs to:
Static General Knowledge
Inventions and Discoveries
Question #3
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Who discovered that the planet Saturn possesses a second massive satellite moon named Rhea?
Correct Answer: Option D
Explanation:
Cassini discovered Rhea in 1672, alongside Tethys, Dione, and Iapetus, using long focal length aerial telescopes.
Cassini discovered Rhea in 1672, alongside Tethys, Dione, and Iapetus, using long focal length aerial telescopes.
This question belongs to:
Static General Knowledge
Inventions and Discoveries
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