The invention of the common synthetic plastic material known as Polyvinyl Chloride (PVC) was optimized by whom? MCQ with Answer and Explanation
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Question #1
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Who discovered the biological mechanism of continuous cell culturing, establishing the immortal 'HeLa cell line' in 1951?
Correct Answer: Option A
Explanation:
George Gey isolated and successfully cultivated cervical cancer tissue cells from Henrietta Lacks without them dying out in laboratory vessels.
George Gey isolated and successfully cultivated cervical cancer tissue cells from Henrietta Lacks without them dying out in laboratory vessels.
This question belongs to:
Static General Knowledge
Inventions and Discoveries
Question #2
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Who invented the lightning conductor in America?
Correct Answer: Option D
Explanation:
Benjamin Franklin invented the lightning rod to protect structures from catastrophic lightning strikes.
Benjamin Franklin invented the lightning rod to protect structures from catastrophic lightning strikes.
This question belongs to:
Static General Knowledge
Inventions and Discoveries
Question #3
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The invention of the common household cleaning appliance known as the electric vacuum cleaner layout was patented by whom?
Correct Answer: Option B
Explanation:
Booth invented the large motorized vacuum pump rig in 1901, and Spangler patented the portable fan-and-bag layout which Hoover later commercialized.
Booth invented the large motorized vacuum pump rig in 1901, and Spangler patented the portable fan-and-bag layout which Hoover later commercialized.
This question belongs to:
Static General Knowledge
Inventions and Discoveries
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