Who discovered the antibiotic Streptomycin, the first effective cure for tuberculosis, winning a Nobel Prize in 1952? MCQ with Answer and Explanation

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Who discovered the antibiotic Streptomycin, the first effective cure for tuberculosis, winning a Nobel Prize in 1952?

A. Selman Waksman

B. Edward Abraham

C. Alexander Fleming

D. Howard Florey

Answer: Option A

Solution (By JKSSB Mock Tests)

Selman Waksman discovered several antibiotics produced by soil microbes, including streptomycin.

This question belongs to: Static General Knowledge Inventions and Discoveries

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Who discovered ultraviolet radiation in 1801, shortly after Herschel's discovery of infrared?

A. Heinrich Hertz

B. Wilhelm Röntgen

C. William Herschel

D. Johann Wilhelm Ritter

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Correct Answer: Option D

Explanation:
Johann Wilhelm Ritter discovered 'chemical rays' (ultraviolet light) by observing how silver chloride reacted to invisible rays past the violet spectrum.

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Question #2

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

A. George Stephenson

B. Thomas Newcomen

C. James Watt

D. Charles Parsons

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Correct Answer: Option D

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

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Question #3

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Who invented the slide rule, an analog computing tool used extensively before electronic calculators?

A. William Oughtred

B. John Napier

C. Gottfried Leibniz

D. Blaise Pascal

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Correct Answer: Option A

Explanation:
William Oughtred invented the circular and rectilinear slide rule in the 1620s based on John Napier's logarithms.

This question belongs to: Static General Knowledge Inventions and Discoveries

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