Who discovered that the element Uranium is isolated from pitchblende mineral ores, naming it after a newly found planet? MCQ with Answer and Explanation
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Question #1
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Who invented the acoustic phonograph, capturing audio playback on tin foil cylinders?
Correct Answer: Option A
Explanation:
Thomas Alva Edison invented the phonograph in 1877, capturing acoustic sound waves mechanically via steel needles onto soft foils.
Thomas Alva Edison invented the phonograph in 1877, capturing acoustic sound waves mechanically via steel needles onto soft foils.
This question belongs to:
Static General Knowledge
Inventions and Discoveries
Question #2
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The invention of the common mechanical steel plow configuration that allowed farming in tough prairie soil was engineered by whom?
Correct Answer: Option D
Explanation:
Blacksmith John Deere designed a highly polished self-scouring steel plow share blade in 1837.
Blacksmith John Deere designed a highly polished self-scouring steel plow share blade in 1837.
This question belongs to:
Static General Knowledge
Inventions and Discoveries
Question #3
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The invention of the highly reflective silver glass surface mirror layout was developed by which chemist?
Correct Answer: Option D
Explanation:
Liebig developed the chemical process of depositing thin metallic silver onto glass panes using chemical reduction reactions in 1835.
Liebig developed the chemical process of depositing thin metallic silver onto glass panes using chemical reduction reactions in 1835.
This question belongs to:
Static General Knowledge
Inventions and Discoveries
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