The invention of the common mechanical device known as the industrial centrifugal cream separator was patented by whom? MCQ with Answer and Explanation

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The invention of the common mechanical device known as the industrial centrifugal cream separator was patented by whom?

A. James Watt

B. Gustaf de Laval

C. Cyrus McCormick

D. Eli Whitney

Answer: Option B

Solution (By JKSSB Mock Tests)

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

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Who invented the first functional integrated circuit (microchip) in 1958?

A. Jack Kilby and Robert Noyce

B. Alan Turing

C. John Bardeen

D. Douglas Engelbart

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Correct Answer: Option A

Explanation:
Jack Kilby of Texas Instruments constructed the first working monolithic integrated circuit on a germanium chip, winning a Nobel Prize.

This question belongs to: Static General Knowledge Inventions and Discoveries

Question #2

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Who invented the modern air conditioning system to control indoor temperature and humidity levels in 1902?

A. Willis Carrier

B. James Dewar

C. Benjamin Franklin

D. Nikola Tesla

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Correct Answer: Option A

Explanation:
Willis Carrier designed the first mechanical air conditioning apparatus to solve humidity problems inside a printing plant.

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Question #3

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The invention of the common domestic non-stick cookware surface pan coating was developed using which material?

A. Kevlar

B. Nylon

C. PTFE (Teflon) by Marc Grégoire

D. Bakelite

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Correct Answer: Option C

Explanation:
French engineer Marc Grégoire developed the process to bond Teflon to aluminum pan matrices, founding the Tefal brand.

This question belongs to: Static General Knowledge Inventions and Discoveries

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