Who discovered the planet Pluto in 1930 at the Lowell Observatory? MCQ with Answer and Explanation

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Who discovered the planet Pluto in 1930 at the Lowell Observatory?

A. Edwin Hubble

B. Clyde Tombaugh

C. Percival Lowell

D. William Herschel

Answer: Option B

Solution (By JKSSB Mock Tests)

Clyde Tombaugh discovered Pluto by comparing photographic plates using a blink comparator instrument.

This question belongs to: Static General Knowledge Inventions and Discoveries

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Question #1

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

A. John Ericsson

B. Charles Parsons

C. Enrico Forlanini and Alexander Graham Bell

D. Robert Fulton

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Correct Answer: Option C

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

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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. James Watt

B. Thomas Newcomen

C. Richard Trevithick

D. George Stephenson

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Correct Answer: Option C

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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Who discovered the therapeutic potential of the anti-malarial drug Artemisinin, winning a Nobel Prize in 2015?

A. Charles Laveran

B. Satoshi Ōmura

C. Ronald Ross

D. Tu Youyou

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Correct Answer: Option D

Explanation:
Tu Youyou extracted artemisinin from sweet wormwood plants based on traditional Chinese medical texts, saving millions from malaria.

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