The invention of the high-power chemical explosive TNT (Trinitrotoluene) was originally intended for use as what? MCQ with Answer and Explanation

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The invention of the high-power chemical explosive TNT (Trinitrotoluene) was originally intended for use as what?

A. Mining agent

B. Yellow dye

C. Disinfectant

D. Rocket fuel

Answer: Option B

Solution (By JKSSB Mock Tests)

German chemist Julius Wilbrand discovered TNT in 1863 as a textile dye; its explosive potential was not recognized until decades later.

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Who discovered that the chemical element Chromium is isolated from Siberian red lead ore matrices?

A. Martin Heinrich Klaproth

B. Antoine Lavoisier

C. Carl Wilhelm Scheele

D. Louis-Nicolas Vauquelin

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Correct Answer: Option D

Explanation:
Vauquelin isolated chromium in 1797 by treating crocoite mineral crystals with hydrochloric acid compounds.

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Who invented the first commercially practical incandescent light bulb in 1879?

A. Humphry Davy

B. Nikola Tesla

C. Thomas Edison

D. Joseph Swan

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Correct Answer: Option C

Explanation:
Thomas Alva Edison developed a fully practical carbon-filament incandescent lamp and public power utility system.

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Question #3

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Who invented the first working internal combustion engine powered by gasoline?

A. Rudolf Diesel

B. Nikolaus Otto

C. Karl Benz

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Correct Answer: Option C

Explanation:
Karl Benz is widely acknowledged as the inventor of the modern gasoline-powered automobile (1885/1886) using an internal combustion engine.

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