The invention of the common domestic non-stick cookware surface pan coating was developed using which material? MCQ with Answer and Explanation
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Question #1
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The modern concept of the chemical bond via shared pairs of electrons (covalent bond) was discovered by whom?
Correct Answer: Option B
Explanation:
Gilbert N. Lewis introduced electron-dot structures and developed the electronic theory of chemical bonding in 1916.
Gilbert N. Lewis introduced electron-dot structures and developed the electronic theory of chemical bonding in 1916.
This question belongs to:
Static General Knowledge
Inventions and Discoveries
Question #2
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Who discovered that the planet Uranus possesses a distinct set of narrow equatorial rings?
Correct Answer: Option A
Explanation:
The rings of Uranus were discovered in 1977 during airborne stellar occultation observations, when the planet blocked a background star's light.
The rings of Uranus were discovered in 1977 during airborne stellar occultation observations, when the planet blocked a background star's light.
This question belongs to:
Static General Knowledge
Inventions and Discoveries
Question #3
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The invention of the cotton gin, which automated the extraction of seeds from cotton fiber, is credited to whom?
Correct Answer: Option D
Explanation:
Eli Whitney patented the cotton gin in 1794, revolutionizing the cotton industry in the United States.
Eli Whitney patented the cotton gin in 1794, revolutionizing the cotton industry in the United States.
This question belongs to:
Static General Knowledge
Inventions and Discoveries
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