Who discovered the first human virus ever identified, the Yellow Fever virus? MCQ with Answer and Explanation

Question
Who discovered the first human virus ever identified, the Yellow Fever virus?
A. Robert Koch
B. Walter Reed and his team
C. Louis Pasteur
D. Dmitri Ivanovsky
Answer: Option B
Solution (By JKSSB Mock Tests)
The U.S. Army Yellow Fever Commission led by Walter Reed isolated and proved the disease was caused by a filterable virus vector.
This question belongs to: Static General Knowledge Inventions and Discoveries
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Question #1
Who discovered that the planet Venus has phases similar to the Moon, supporting the heliocentric theory?
A. Tycho Brahe
B. Johannes Kepler
C. Galileo Galilei
D. Nicolaus Copernicus
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Correct Answer: Option C

Explanation:
Galileo Galilei observed the phases of Venus in 1610 using his telescope, confirming that it orbits the Sun.
This question belongs to: Static General Knowledge Inventions and Discoveries
Question #2
Who discovered the law of hereditary transmission through experiments on pea plants?
A. Thomas Hunt Morgan
B. Gregor Mendel
C. Charles Darwin
D. Jean-Baptiste Lamarck
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Correct Answer: Option B

Explanation:
Gregor Mendel is known as the father of modern genetics for his discovery of the basic laws of heredity through breeding pea plants.
This question belongs to: Static General Knowledge Inventions and Discoveries
Question #3
The invention of the common electronic storage method known as the floppy disk was developed by which company?
A. Sony
B. Apple
C. IBM engineering team led by Alan Shugart
D. Xerox
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Correct Answer: Option C

Explanation:
IBM introduced the 8-inch magnetic coated flexible disk system in 1971 to load microcode patches into mainframes.
This question belongs to: Static General Knowledge Inventions and Discoveries
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