The first practical monochrome computer mouse was invented by whom at the Stanford Research Institute? MCQ with Answer and Explanation

Question
The first practical monochrome computer mouse was invented by whom at the Stanford Research Institute?
A. Douglas Engelbart
B. Bill Gates
C. Alan Turing
D. Steve Jobs
Answer: Option A
Solution (By JKSSB Mock Tests)
Douglas Engelbart invented the computer mouse in 1964, constructed out of a wooden shell with two metallic wheels.
This question belongs to: Static General Knowledge Inventions and Discoveries
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Practice More Inventions and Discoveries Questions

Question #1
Who discovered that certain types of biological viruses infect and replicate exclusively inside bacterial cell hosts, establishing 'Bacteriophages'?
A. Dmitri Ivanovsky
B. Frederick Twort and Félix d'Hérelle
C. Louis Pasteur
D. Robert Koch
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Correct Answer: Option B

Explanation:
Twort and d'Hérelle independently isolated filterable bacterial lysis agents, establishing early phage therapeutic concepts.
This question belongs to: Static General Knowledge Inventions and Discoveries
Question #2
Who invented the first successful gas mask used widely in industrial safety and military applications?
A. Garrett Morgan
B. Nikola Tesla
C. Alexander Fleming
D. Thomas Edison
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Correct Answer: Option A

Explanation:
African-American inventor Garrett Morgan patented the safety hood/smoke protector device in 1914, which laid the foundation for modern gas masks.
This question belongs to: Static General Knowledge Inventions and Discoveries
Question #3
Who invented the first practical electronic pocket calculator, introduced commercially in 1970?
A. Sanyo and Texas Instruments teams
B. Alan Turing
C. Douglas Engelbart
D. Charles Babbage
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Correct Answer: Option A

Explanation:
Sanyo's ICC-0081 and Texas Instruments' 'Cal-Tech' project initiated the mass scaling of hand-held microelectronic computation.
This question belongs to: Static General Knowledge Inventions and Discoveries
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