Who discovered the existence of the atomic nucleus through the famous Gold Foil Experiment? MCQ with Answer and Explanation

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Who discovered the existence of the atomic nucleus through the famous Gold Foil Experiment?

A. Ernest Rutherford

B. John Dalton

C. Niels Bohr

D. J.J. Thomson

Answer: Option A

Solution (By JKSSB Mock Tests)

Ernest Rutherford discovered the dense, positively charged atomic nucleus in 1911 by firing alpha particles at thin gold sheets.

This question belongs to: Static General Knowledge Inventions and Discoveries

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Who discovered that white light is a mixture of seven fundamental component colors using a prism?

A. Thomas Young

B. Isaac Newton

C. James Clerk Maxwell

D. Christian Huygens

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Correct Answer: Option B

Explanation:
Sir Isaac Newton proved through prism experiments that white light decomposes into a continuous spectrum of colors.

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Question #2

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Who discovered that the chemical element Titanium is isolated from dark mineral iron sand matrices?

A. Jöns Jacob Berzelius

B. William Gregor

C. Antoine Lavoisier

D. Martin Heinrich Klaproth

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Correct Answer: Option B

Explanation:
English clergyman William Gregor discovered titanium in ilmenite mineral sands in 1791, naming it 'menaccanite'.

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Question #3

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The invention of the common household safety matchbox strike face mixture containing red phosphorus was patented by whom?

A. Robert Boyle

B. Humphry Davy

C. Pasch Brothers and John Lundström

D. John Walker

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Correct Answer: Option C

Explanation:
The Swedish inventors split match chemical triggers, rendering matches safe from accidental friction ignition in pocket storage.

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