Who discovered the phenomenon of nuclear magnetic resonance (NMR), which forms the basis of modern MRI scanners? MCQ with Answer and Explanation
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Question #1
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Who is credited with the invention of the submarine 'Turtle', used in military action?
Correct Answer: Option D
Explanation:
David Bushnell invented the Turtle in 1775, the first submarine ever used in combat.
David Bushnell invented the Turtle in 1775, the first submarine ever used in combat.
This question belongs to:
Static General Knowledge
Inventions and Discoveries
Question #2
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The creation of the first highly precise marine chronometer ($H4$) that solved the global longitude tracking problem was done by whom?
Correct Answer: Option D
Explanation:
Carpenter turned clockmaker John Harrison built specialized friction-free marine timekeepers that operated accurately on moving ships.
Carpenter turned clockmaker John Harrison built specialized friction-free marine timekeepers that operated accurately on moving ships.
This question belongs to:
Static General Knowledge
Inventions and Discoveries
Question #3
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Alexander Fleming discovered penicillin, the world's first effective antibiotic, in which year?
Correct Answer: Option C
Explanation:
Sir Alexander Fleming discovered penicillin in 1928 at St. Mary's Hospital, London, after noticing a mold contaminating a petridish of staphylococci.
Sir Alexander Fleming discovered penicillin in 1928 at St. Mary's Hospital, London, after noticing a mold contaminating a petridish of staphylococci.
This question belongs to:
Static General Knowledge
Inventions and Discoveries
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