Who discovered the true nature of combustion as an oxidation process, disproving the phlogiston theory? MCQ with Answer and Explanation

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Who discovered the true nature of combustion as an oxidation process, disproving the phlogiston theory?

A. John Dalton

B. Joseph Priestley

C. Antoine Lavoisier

D. Robert Boyle

Answer: Option C

Solution (By JKSSB Mock Tests)

Antoine Lavoisier demonstrated that combustion involves elements chemically combining with oxygen.

This question belongs to: Static General Knowledge Inventions and Discoveries

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The first modern battery, known as the voltaic pile, was invented by whom in 1800?

A. Michael Faraday

B. André-Marie Ampère

C. Alessandro Volta

D. Luigi Galvani

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Correct Answer: Option C

Explanation:
Alessandro Volta invented the first chemical battery, generating a continuous electrical current, which led to the unit 'Volt' being named after him.

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Question #2

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The invention of the common high-pressure kitchen pressure cooker ('Digester') was invented by whom in 1679?

A. James Watt

B. Robert Boyle

C. Denis Papin

D. Blaise Pascal

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Correct Answer: Option C

Explanation:
French physicist Denis Papin invented the steam digester, which raised boiling temperatures by trapping internal steam pressure.

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Question #3

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The first practical mechanical sewing machine was patented by whom in 1846?

A. Isaac Singer

B. Eli Whitney

C. Elias Howe

D. Walter Hunt

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Correct Answer: Option C

Explanation:
Elias Howe patented the first practical lockstitch sewing machine in the United States in 1846.

This question belongs to: Static General Knowledge Inventions and Discoveries

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