The first practical high-pressure steam engine was constructed by which mechanical pioneer? MCQ with Answer and Explanation

Question
The first practical high-pressure steam engine was constructed by which mechanical pioneer?
A. George Stephenson
B. Richard Trevithick
C. James Watt
D. Thomas Newcomen
Answer: Option B
Solution (By JKSSB Mock Tests)
Richard Trevithick built high-pressure industrial engines capable of generating high power outputs from lightweight boilers.
This question belongs to: Static General Knowledge Inventions and Discoveries
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Question #1
The invention of the common synthetic plastic material known as Polyethylene (LDPE) was an accidental discovery by which chemical company?
A. Dow Chemical
B. DuPont
C. BASF
D. ICI (Imperial Chemical Industries)
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Correct Answer: Option D

Explanation:
Eric Fawcett and Reginald Gibson accidentally produced white waxy polyethylene solid residue while testing high-pressure ethylene reactions at ICI in 1933.
This question belongs to: Static General Knowledge Inventions and Discoveries
Question #2
Who discovered that light waves exhibit distinct transverse oscillation directions when passing through tourmaline crystals, establishing Polarization?
A. Thomas Young
B. James Clerk Maxwell
C. Isaac Newton
D. Etienne-Louis Malus and Erasmus Bartholin
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Correct Answer: Option D

Explanation:
Bartholin discovered double refraction in Iceland spar, and Malus formalized optical polarization laws by reflection properties.
This question belongs to: Static General Knowledge Inventions and Discoveries
Question #3
The invention of the common domestic non-stick cookware surface pan coating was developed using which material?
A. PTFE (Teflon) by Marc Grégoire
B. Kevlar
C. Nylon
D. Bakelite
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Correct Answer: Option A

Explanation:
French engineer Marc Grégoire developed the process to bond Teflon to aluminum pan matrices, founding the Tefal brand.
This question belongs to: Static General Knowledge Inventions and Discoveries
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