The invention of the common electric toaster mechanism was achieved using nichrome wire by whom? MCQ with Answer and Explanation

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The invention of the common electric toaster mechanism was achieved using nichrome wire by whom?

A. Nikola Tesla

B. Albert Marsh and George Schneider

C. Elisha Otis

D. Thomas Edison

Answer: Option B

Solution (By JKSSB Mock Tests)

Albert Marsh patented Nichrome resistance wire alloy, which enabled safe high-heat cycling within appliances like toasters.

This question belongs to: Static General Knowledge Inventions and Discoveries

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Question #1

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The invention of the carbon-14 dating technique to determine the age of organic materials was developed by whom?

A. Otto Hahn

B. Marie Curie

C. Ernest Rutherford

D. Willard Libby

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Correct Answer: Option D

Explanation:
Willard Libby led the team that developed radiocarbon dating in 1949, winning the 1960 Nobel Prize in Chemistry.

This question belongs to: Static General Knowledge Inventions and Discoveries

Question #2

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The invention of the common household incandescent light bulb configuration featuring durable tungsten filaments was patented by whom?

A. William Coolidge and Irving Langmuir

B. Nikola Tesla

C. Thomas Edison

D. Joseph Swan

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Correct Answer: Option A

Explanation:
Coolidge developed ductile tungsten wire processing, and Langmuir filled bulbs with inert gas, extending operation life dramatically.

This question belongs to: Static General Knowledge Inventions and Discoveries

Question #3

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The invention of the common computing operating system layout known as Unix was co-developed by whom?

A. Bill Gates

B. Ken Thompson and Dennis Ritchie

C. Linus Torvalds

D. Steve Jobs

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Correct Answer: Option B

Explanation:
Thompson and Ritchie engineered Unix at Bell Labs in 1969, establishing foundational standards for multitasking operating systems.

This question belongs to: Static General Knowledge Inventions and Discoveries

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