The invention of the modern calendar system used globally today, the Gregorian Calendar, was introduced by which pope in 1582? MCQ with Answer and Explanation

Question
The invention of the modern calendar system used globally today, the Gregorian Calendar, was introduced by which pope in 1582?
A. Pope Gregory VII
B. Pope Julius II
C. Pope Gregory XIII
D. Pope Urban II
Answer: Option C
Solution (By JKSSB Mock Tests)
Pope Gregory XIII decreed the modification of the older Julian calendar to fix errors regarding the length of the solar year.
This question belongs to: Static General Knowledge Inventions and Discoveries
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Question #1
Who discovered the existence of blood capillaries linking arteries to veins, completing Harvey's circulation theory?
A. Antonie van Leeuwenhoek
B. William Harvey
C. Marcello Malpighi
D. Robert Hooke
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Correct Answer: Option C

Explanation:
Marcello Malpighi used primitive microscopes to observe capillaries in lung tissues in 1661.
This question belongs to: Static General Knowledge Inventions and Discoveries
Question #2
Who discovered the precise genetic structure layout known as the operon model in bacterial gene regulation?
A. François Jacob and Jacques Monod
B. James Watson and Francis Crick
C. Barbara McClintock
D. Gregor Mendel
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Correct Answer: Option A

Explanation:
Jacob and Monod mapped the lac operon in E. coli, proving how cells inhibit or promote enzyme production based on nutrient environments.
This question belongs to: Static General Knowledge Inventions and Discoveries
Question #3
Who discovered the presence of electrons within stable atomic configurations by modeling the 'Plum Pudding' atom?
A. J.J. Thomson
B. John Dalton
C. Niels Bohr
D. Ernest Rutherford
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Correct Answer: Option A

Explanation:
J.J. Thomson proposed the model where small negatively charged electrons are embedded in a uniform sphere of positive charge.
This question belongs to: Static General Knowledge Inventions and Discoveries
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