Who discovered the presence of electrons within stable atomic configurations by modeling the 'Plum Pudding' atom? MCQ with Answer and Explanation

Who discovered the presence of electrons within stable atomic configurations by modeling the 'Plum Pudding' atom?

A. J.J. Thomson

B. Niels Bohr

C. Ernest Rutherford

D. John Dalton

Answer: Option A

J.J. Thomson proposed the model where small negatively charged electrons are embedded in a uniform sphere of positive charge.

This question belongs to: Static General Knowledge Inventions and Discoveries

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Question #1 Report Error

Who discovered the planet Neptune using mathematical calculations before it was verified by telescope?

A. William Herschel

B. Johannes Kepler

C. Urbain Le Verrier and John Couch Adams

D. Galileo Galilei

Correct Answer: Option C

Explanation:
Urbain Le Verrier and John Couch Adams independently calculated the location of Neptune based on irregularities in Uranus's orbit.

This question belongs to: Static General Knowledge Inventions and Discoveries

Question #2 Report Error

Who discovered that cells arise only from pre-existing cells via division, completing cell theory?

A. Rudolf Virchow

B. Robert Hooke

C. Matthias Schleiden

D. Theodor Schwann

Correct Answer: Option A

Explanation:
Rudolf Virchow popularized the Latin aphorism 'Omnis cellula e cellula' in 1855, establishing modern cellular pathology basics.

This question belongs to: Static General Knowledge Inventions and Discoveries

Question #3 Report Error

The invention of the modern steam turbine, which enabled large-scale thermal electric power generation, was made by whom?

A. Charles Parsons

B. Thomas Newcomen

C. James Watt

D. George Stephenson

Correct Answer: Option A

Explanation:
Sir Charles Parsons invented the multi-stage steam turbine in 1884, transforming maritime shipping and electric grids.

This question belongs to: Static General Knowledge Inventions and Discoveries