The invention of the modern mechanical reaper, which automated grain harvesting, was patented by whom? MCQ with Answer and Explanation
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Question #1
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Who discovered the specific mathematical formula detailing gas density variation relative to molecular weight, known as the diffusion law?
Correct Answer: Option D
Explanation:
Graham's Law states that the rate of effusion or diffusion of a gas is inversely proportional to the square root of its molecular mass.
Graham's Law states that the rate of effusion or diffusion of a gas is inversely proportional to the square root of its molecular mass.
This question belongs to:
Static General Knowledge
Inventions and Discoveries
Question #2
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The concept of absolute zero temperature and the thermodynamic scale was discovered by whom?
Correct Answer: Option C
Explanation:
William Thomson, later Lord Kelvin, proposed the absolute thermodynamic scale of temperature in 1848.
William Thomson, later Lord Kelvin, proposed the absolute thermodynamic scale of temperature in 1848.
This question belongs to:
Static General Knowledge
Inventions and Discoveries
Question #3
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The invention of the common industrial building safety device known as the wire rope cable line was patented by whom?
Correct Answer: Option D
Explanation:
German mining engineer Wilhelm Albert fabricated twisted iron wire ropes in 1834 to replace hemp mine hoist chains.
German mining engineer Wilhelm Albert fabricated twisted iron wire ropes in 1834 to replace hemp mine hoist chains.
This question belongs to:
Static General Knowledge
Inventions and Discoveries
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