The invention of the first practical automatic electronic computational tracking engine, the Colossus, was engineered by whom? MCQ with Answer and Explanation

Question

The invention of the first practical automatic electronic computational tracking engine, the Colossus, was engineered by whom?

A. Charles Babbage

B. Tommy Flowers

C. John von Neumann

D. Alan Turing

Answer: Option B

Solution (By JKSSB Mock Tests)

Tommy Flowers designed the thermionic valve-based Colossus computer for British codebreakers at Bletchley Park to crack German Lorenz ciphers.

This question belongs to: Static General Knowledge Inventions and Discoveries

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Who discovered that the chemical element Silicon is isolated from silica sands via reduction with potassium metal?

A. John Dalton

B. Humphry Davy

C. Antoine Lavoisier

D. Jöns Jacob Berzelius

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Correct Answer: Option D

Explanation:
Berzelius successfully isolated pure amorphous elemental silicon in 1824 by heating potassium fluorosilicate.

This question belongs to: Static General Knowledge Inventions and Discoveries

Question #2

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Who discovered the first biological enzyme, Diastase, which breaks down starches into sugars?

A. Alexander Fleming

B. Hans Krebs

C. Louis Pasteur

D. Anselme Payen

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Correct Answer: Option D

Explanation:
French chemist Anselme Payen isolated diastase from barley malt in 1833, founding the scientific study of enzymes.

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Question #3

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

A. Howard Florey

B. Alexander Fleming

C. Edward Abraham

D. Selman Waksman

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Correct Answer: Option D

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

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