Who invented the first practical, safe, non-flickering miner's safety lamp alongside Humphry Davy? MCQ with Answer and Explanation

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Who invented the first practical, safe, non-flickering miner's safety lamp alongside Humphry Davy?

A. Thomas Newcomen

B. James Watt

C. Robert Fulton

D. George Stephenson

Answer: Option D

Solution (By JKSSB Mock Tests)

George Stephenson independently invented a similar safety lamp (Geordie lamp) in 1815, around the exact same time as Davy.

This question belongs to: Static General Knowledge Inventions and Discoveries

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The invention of the common mechanical office stapler mechanism was popularized by which manufacturing developer?

A. Walter Hunt

B. Christopher Sholes

C. George McGill and the Boston Wire Stitcher Company

D. John Loud

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Correct Answer: Option C

Explanation:
McGill patented functional malleable brass paper fasteners, and industrial developers later automated magazine tracking feeds.

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Question #2

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The invention of the modern pneumatic tire containing compressed inner air tubes was patented by which developer?

A. John Boyd Dunlop

B. Robert William Thomson

C. Charles Goodyear

D. Karl Benz

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Correct Answer: Option A

Explanation:
John Boyd Dunlop patented a highly successful commercial pneumatic tire in 1888 for his son's tricycle, reducing operational friction.

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Question #3

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The invention of the common medical diagnostic technology known as Ultrasound imaging is based on whose discovery of high-frequency sound physics?

A. René Laennec

B. Alexander Fleming

C. Wilhelm Röntgen

D. Lazzaro Spallanzani and Pierre Curie

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Correct Answer: Option D

Explanation:
Spallanzani studied bat echolocation, and the Curie brothers discovered piezoelectric crystallization, enabling high-frequency echography transducers.

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