The invention of the jet engine is attributed to which British engineer? MCQ with Answer and Explanation

Question
The invention of the jet engine is attributed to which British engineer?
A. Christopher Cockerell
B. Frank Whittle
C. Hans von Ohain
D. James Dyson
Answer: Option B
Solution (By JKSSB Mock Tests)
Sir Frank Whittle submitted the first patent for a turbojet engine in 1930, though Germany's Hans von Ohain built the first operational jet plane independently later.
This question belongs to: Static General Knowledge Inventions and Discoveries
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Question #1
Who discovered the bacterium Vibrio cholerae, the causative agent of cholera?
A. Alexander Fleming
B. Robert Koch
C. Louis Pasteur
D. Joseph Lister
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Correct Answer: Option B

Explanation:
Robert Koch isolated Vibrio cholerae in 1883 during an epidemic outbreak investigation in Egypt and India.
This question belongs to: Static General Knowledge Inventions and Discoveries
Question #2
Who discovered that cosmic celestial entities emit radio signals, establishing the branch of Radio Astronomy?
A. Guglielmo Marconi
B. Grote Reber
C. Karl Jansky
D. Edwin Hubble
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Correct Answer: Option C

Explanation:
Jansky discovered radio emission noise origins from the galactic center in 1931 using directional rotating antenna arrays at Bell Labs.
This question belongs to: Static General Knowledge Inventions and Discoveries
Question #3
Who discovered that the chemical element Cadmium is isolated as an impurity inside zinc carbonate mineral ores?
A. Jöns Jacob Berzelius
B. Martin Heinrich Klaproth
C. Carl Wilhelm Scheele
D. Friedrich Stromeyer
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Correct Answer: Option D

Explanation:
Stromeyer discovered cadmium in 1817 while inspecting pharmaceutical zinc oxide samples in Germany.
This question belongs to: Static General Knowledge Inventions and Discoveries
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