The invention of the modern mechanical wristwatch was popularized for military utility by which brand/designer? MCQ with Answer and Explanation

Question
The invention of the modern mechanical wristwatch was popularized for military utility by which brand/designer?
A. John Harrison
B. Patek Philippe
C. Abraham-Louis Breguet
D. Louis Cartier
Answer: Option D
Solution (By JKSSB Mock Tests)
Louis Cartier created the Santos wristwatch in 1904 for pilot Alberto Santos-Dumont, popularizing men's portable wrist watches over pocket variants.
This question belongs to: Static General Knowledge Inventions and Discoveries
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Question #1
The invention of the mechanical calculating machine named 'Pascaline' in 1642 was completed by whom?
A. Charles Babbage
B. René Descartes
C. Blaise Pascal
D. Gottfried Wilhelm Leibniz
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Correct Answer: Option C

Explanation:
Blaise Pascal invented the Pascaline to assist his father, a tax commissioner, in performing arithmetic addition and subtraction.
This question belongs to: Static General Knowledge Inventions and Discoveries
Question #2
Who discovered the first known antibiotic substance produced by soil actinomycetes, Actinomycin?
A. Selman Waksman
B. Louis Pasteur
C. Alexander Fleming
D. Robert Koch
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Correct Answer: Option A

Explanation:
Selman Waksman and his student H. Boyd Woodruff isolated actinomycin in 1940, sparking targeted soil microbe screening programs.
This question belongs to: Static General Knowledge Inventions and Discoveries
Question #3
The invention of the fiber-optic communication system was revolutionized by the research of which Anglo-Chinese physicist?
A. C.W. Chu
B. Charles K. Kao
C. Sumio Iijima
D. Shuji Nakamura
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Correct Answer: Option B

Explanation:
Charles K. Kao won the 2009 Nobel Prize in Physics for groundbreaking achievements concerning the transmission of light in fibers for optical communication.
This question belongs to: Static General Knowledge Inventions and Discoveries
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