Who invented the first successful gas mask used widely in industrial safety and military applications? MCQ with Answer and Explanation
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Question #1
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The invention of the common automotive safety equipment known as the three-point seatbelt was patented by whom?
Correct Answer: Option D
Explanation:
Swedish engineer Nils Bohlin developed the modern cross-lap safety harness configuration in 1959, saving countless lives across traffic boundaries.
Swedish engineer Nils Bohlin developed the modern cross-lap safety harness configuration in 1959, saving countless lives across traffic boundaries.
This question belongs to:
Static General Knowledge
Inventions and Discoveries
Question #2
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Who invented the slide rule, an analog computing tool used extensively before electronic calculators?
Correct Answer: Option B
Explanation:
William Oughtred invented the circular and rectilinear slide rule in the 1620s based on John Napier's logarithms.
William Oughtred invented the circular and rectilinear slide rule in the 1620s based on John Napier's logarithms.
This question belongs to:
Static General Knowledge
Inventions and Discoveries
Question #3
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Who discovered that atomic radioactive decay emits discrete high-energy electromagnetic waves named 'Gamma Rays'?
Correct Answer: Option A
Explanation:
French chemist Paul Villard discovered gamma radiation in 1900 while studying uranium emission shielding paths.
French chemist Paul Villard discovered gamma radiation in 1900 while studying uranium emission shielding paths.
This question belongs to:
Static General Knowledge
Inventions and Discoveries
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