Who invented the electrocardiogram (ECG/EKG) device, winning a Nobel Prize in 1924? MCQ with Answer and Explanation

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Who invented the electrocardiogram (ECG/EKG) device, winning a Nobel Prize in 1924?

A. Willem Einthoven

B. Robert Koch

C. Alexander Fleming

D. Hans Berger

Answer: Option A

Solution (By JKSSB Mock Tests)

Willem Einthoven invented the first practical electrocardiogram in 1903 and received the Nobel Prize for it.

This question belongs to: Static General Knowledge Inventions and Discoveries

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The invention of the common mechanical rotary print engine that accelerated newspaper publishing was patented by whom?

A. Christopher Sholes

B. William Caxton

C. Johannes Gutenberg

D. Richard March Hoe

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Correct Answer: Option D

Explanation:
Richard March Hoe invented the rotary type press in 1843, placing text matrices on revolving drums rather than flat tables.

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Question #2

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The invention of the common synthetic plastic material known as Polyvinyl Chloride (PVC) was optimized by whom?

A. Wallace Carothers

B. Waldo Semon

C. Leo Baekeland

D. Roy Plunkett

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Correct Answer: Option B

Explanation:
Waldo Semon added specialized plasticizing agents to brittle PVC material in the 1920s, transforming it into a flexible, highly useful industrial plastic.

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Question #3

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The invention of the common mechanical marine escape capsule configuration was engineered by whom?

A. Cornelis Drebbel

B. Robert Fulton

C. Alexander Mitchell

D. John Ericsson

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Correct Answer: Option B

Explanation:
Fulton optimized underlying physical buoyancy balances, generating early blueprints for underwater tracking and marine transport apparatus.

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