The expanding nature of the universe was discovered by which astronomer? MCQ with Answer and Explanation
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Question #1
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Who invented the standard mechanical marine propeller that replaced paddle wheels on ships?
Correct Answer: Option B
Explanation:
Ericsson and Smith independently patented efficient screw propeller designs in 1836, enabling faster transoceanic transport.
Ericsson and Smith independently patented efficient screw propeller designs in 1836, enabling faster transoceanic transport.
This question belongs to:
Static General Knowledge
Inventions and Discoveries
Question #2
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Who is credited with the invention of the telephone in 1876?
Correct Answer: Option C
Explanation:
Alexander Graham Bell received the first US patent for the telephone in March 1876.
Alexander Graham Bell received the first US patent for the telephone in March 1876.
This question belongs to:
Static General Knowledge
Inventions and Discoveries
Question #3
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Who discovered the radioactive elements Radium and Polonium?
Correct Answer: Option C
Explanation:
Marie Skłodowska-Curie and her husband Pierre isolated polonium and radium from pitchblende ore in 1898.
Marie Skłodowska-Curie and her husband Pierre isolated polonium and radium from pitchblende ore in 1898.
This question belongs to:
Static General Knowledge
Inventions and Discoveries
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