Who formulated the quantum theory, establishing that energy is emitted in discrete packets called quanta? MCQ with Answer and Explanation

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Who formulated the quantum theory, establishing that energy is emitted in discrete packets called quanta?

A. Max Planck

B. Albert Einstein

C. Louis de Broglie

D. Werner Heisenberg

Answer: Option A

Solution (By JKSSB Mock Tests)

Max Planck introduced quantum theory in 1900, originating Planck's constant ($h$), and won the 1918 Nobel Prize.

This question belongs to: Static General Knowledge Inventions and Discoveries

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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. George Stephenson

C. James Watt

D. Richard Trevithick

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Correct Answer: Option D

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

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Question #2

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The invention of the standard mechanical typewriter carbon paper mechanism to replicate text was patented by whom?

A. Walter Hunt

B. Christopher Sholes

C. John Loud

D. Pellegrino Turri

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Correct Answer: Option D

Explanation:
Pellegrino Turri developed early carbon pigment transfer papers in 1806 to functionalize his experimental typing machines.

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Question #3

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Who discovered that biological enzymes can perform structural transformations outside of living cell containers, establishing cell-free fermentation?

A. Louis Pasteur

B. Hans Krebs

C. Eduard Buchner

D. Robert Koch

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Correct Answer: Option C

Explanation:
Buchner proved yeast extracts ferment sugar into ethanol without living cell structural scaffolding, winning the 1907 Nobel Prize in Chemistry.

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