The invention of the common kitchen appliance known as the electric food disposal system was developed by whom? MCQ with Answer and Explanation

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The invention of the common kitchen appliance known as the electric food disposal system was developed by whom?

A. Willis Carrier

B. Thomas Edison

C. John W. Hammes

D. Alva Fisher

Answer: Option C

Solution (By JKSSB Mock Tests)

Architect John W. Hammes invented the sink garbage disposer device ('InSinkErator') in 1927 to help his wife clean up food waste.

This question belongs to: Static General Knowledge Inventions and Discoveries

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Who invented the lightning conductor in America?

A. Michael Faraday

B. Thomas Edison

C. Benjamin Franklin

D. Nikola Tesla

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Correct Answer: Option C

Explanation:
Benjamin Franklin invented the lightning rod to protect structures from catastrophic lightning strikes.

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Question #2

The invention of the common mechanical device known as the automobile automatic transmission assembly was engineered by whom?

A. Earl Thompson and the General Motors team

B. Karl Benz

C. Henry Ford

D. Rudolf Diesel

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Correct Answer: Option A

Explanation:
Thompson designed the 'Hydra-Matic' system, which was introduced by Oldsmobile in 1939 as the first mass-market automatic transmission.

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Question #3

The first practical steam-powered water pump, known as the 'Miner's Friend', was invented by whom in 1698?

A. James Watt

B. Thomas Newcomen

C. Thomas Savery

D. Richard Trevithick

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Correct Answer: Option C

Explanation:
Thomas Savery patented the first commercial steam-driven machine to pump water out of flooded mines.

This question belongs to: Static General Knowledge Inventions and Discoveries

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