The invention of the common electronic operating layout known as the Graphical User Interface (GUI) was pioneered by which lab? MCQ with Answer and Explanation

Question
The invention of the common electronic operating layout known as the Graphical User Interface (GUI) was pioneered by which lab?
A. Apple Computers
B. Microsoft
C. IBM Research
D. Xerox PARC
Answer: Option D
Solution (By JKSSB Mock Tests)
Xerox Palo Alto Research Center (PARC) engineered the Alto computer featuring mouse-driven windows, menus, and file icons.
This question belongs to: Static General Knowledge Inventions and Discoveries
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Question #1
The first practical high-pressure steam engine was constructed by which mechanical pioneer?
A. Thomas Newcomen
B. James Watt
C. Richard Trevithick
D. George Stephenson
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Correct Answer: Option C

Explanation:
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
Question #2
Who discovered the specific virus responsible for tobacco mosaic disease, launching the scientific discipline of Virology?
A. Alexander Fleming
B. Robert Koch
C. Louis Pasteur
D. Dmitri Ivanovsky and Martinus Beijerinck
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Correct Answer: Option D

Explanation:
Ivanovsky found that infected extracts remain contagious after chamber porcelain filtration; Beijerinck termed the fluid agent a 'virus'.
This question belongs to: Static General Knowledge Inventions and Discoveries
Question #3
The invention of the mercury barometric tube directly led to the recognition of what physical condition?
A. Vacuum
B. Capillary action
C. Hydrostatic paradox
D. Absolute humidity
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Correct Answer: Option A

Explanation:
Torricelli's barometer left an empty space at the top of the glass tube, creating the first recognized sustained artificial vacuum.
This question belongs to: Static General Knowledge Inventions and Discoveries
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