The invention of the mass spectrometer, used to separate isotopes and determine chemical composition, was developed by whom? MCQ with Answer and Explanation

Question

The invention of the mass spectrometer, used to separate isotopes and determine chemical composition, was developed by whom?

A. J.J. Thomson

B. Francis William Aston

C. James Chadwick

D. Ernest Rutherford

Answer: Option B

Solution (By JKSSB Mock Tests)

Francis William Aston built the first fully functional mass spectrograph in 1919 and discovered isotopes in non-radioactive elements.

This question belongs to: Static General Knowledge Inventions and Discoveries

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Question #1

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Who discovered that atomic elements possess unique magnetic configuration properties that line split inside specialized oven beam devices?

A. Otto Stern and Walther Gerlach

B. Werner Heisenberg

C. Wolfgang Pauli

D. Niels Bohr

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Correct Answer: Option A

Explanation:
The Stern-Gerlach experiment in 1922 physically demonstrated spatial quantization and electron spin attributes.

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Question #2

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The invention of the first practical steam engine locomotive deployed on standard industrial rail layouts was done by whom?

A. Thomas Newcomen

B. Richard Trevithick

C. James Watt

D. George Stephenson

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Correct Answer: Option B

Explanation:
Trevithick designed the first functional railway steam locomotive in 1804 for the Penydarren ironworks track.

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Question #3

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The invention of the highly stable high-speed ship hull configuration known as the Hydrofoil was patented by whom?

A. Charles Parsons

B. Enrico Forlanini and Alexander Graham Bell

C. John Ericsson

D. Robert Fulton

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Correct Answer: Option B

Explanation:
Forlanini and Bell developed wings that lifted boat hulls out of the water to eliminate surface drag friction.

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