The term 'vitamin' was coined by which biochemist in 1912? MCQ with Answer and Explanation

Question
The term 'vitamin' was coined by which biochemist in 1912?
A. Casimir Funk
B. Louis Pasteur
C. Frederick Hopkins
D. Robert Koch
Answer: Option A
Solution (By JKSSB Mock Tests)
Polish biochemist Casimir Funk coined the term 'vitamine' (later shortened to vitamin) to describe vital amine nutrients.
This question belongs to: Static General Knowledge Inventions and Discoveries
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Question #1
The invention of the common electronic LED (Light Emitting Diode) operating in the visible light spectrum was developed by whom?
A. Nick Holonyak
B. Theodore Maiman
C. Thomas Edison
D. Shuji Nakamura
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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
Question #2
Who discovered the law of conservation of mass in chemical reactions?
A. John Dalton
B. Robert Boyle
C. Antoine Lavoisier
D. Joseph Priestley
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Correct Answer: Option C

Explanation:
Antoine Lavoisier formulated the Law of Conservation of Mass in 1789, proving that mass is neither created nor destroyed in chemical transformations.
This question belongs to: Static General Knowledge Inventions and Discoveries
Question #3
Who invented the acoustic phonograph, capturing audio playback on tin foil cylinders?
A. Emile Berliner
B. Alexander Graham Bell
C. Nikola Tesla
D. Thomas Edison
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Correct Answer: Option D

Explanation:
Thomas Alva Edison invented the phonograph in 1877, capturing acoustic sound waves mechanically via steel needles onto soft foils.
This question belongs to: Static General Knowledge Inventions and Discoveries
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