Who discovered the process of nuclear fission in heavy elements, winning the Nobel Prize in Chemistry in 1944? MCQ with Answer and Explanation

Question
Who discovered the process of nuclear fission in heavy elements, winning the Nobel Prize in Chemistry in 1944?
A. Lise Meitner
B. Niels Bohr
C. Otto Hahn
D. Enrico Fermi
Answer: Option C
Solution (By JKSSB Mock Tests)
German chemist Otto Hahn discovered nuclear fission of uranium in 1938 alongside Fritz Strassmann.
This question belongs to: Static General Knowledge Inventions and Discoveries
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Question #1
Who discovered the specific virus responsible for causing AIDS (Human Immunodeficiency Virus)?
A. Luc Montagnier and Robert Gallo
B. David Baltimore
C. Howard Temin
D. Jonas Salk
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Correct Answer: Option A

Explanation:
Luc Montagnier and Robert Gallo isolated and identified the retrovirus HIV as the causative agent behind AIDS in the 1880s.
This question belongs to: Static General Knowledge Inventions and Discoveries
Question #2
The invention of the common mechanical device known as the industrial centrifugal cream separator was patented by whom?
A. Eli Whitney
B. Cyrus McCormick
C. James Watt
D. Gustaf de Laval
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Correct Answer: Option D

Explanation:
De Laval patented the high-speed continuous centrifugal cream separator in 1878, streamlining commercial dairy production.
This question belongs to: Static General Knowledge Inventions and Discoveries
Question #3
The invention of the common electronic LED (Light Emitting Diode) operating in the visible light spectrum was developed by whom?
A. Nick Holonyak
B. Shuji Nakamura
C. Theodore Maiman
D. Thomas Edison
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Correct Answer: Option A

Explanation:
Nick Holonyak invented the first practical visible-spectrum (red) light-emitting diode in 1962 while working at General Electric.
This question belongs to: Static General Knowledge Inventions and Discoveries
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