The invention of the common domestic non-stick cookware surface pan coating was developed using which material? MCQ with Answer and Explanation

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The invention of the common domestic non-stick cookware surface pan coating was developed using which material?

A. Bakelite

B. Kevlar

C. PTFE (Teflon) by Marc Grégoire

D. Nylon

Answer: Option C

Solution (By JKSSB Mock Tests)

French engineer Marc Grégoire developed the process to bond Teflon to aluminum pan matrices, founding the Tefal brand.

This question belongs to: Static General Knowledge Inventions and Discoveries

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Who discovered the citric acid cycle (also known as the Krebs cycle) in cellular respiration?

A. Melvin Calvin

B. Louis Pasteur

C. Arthur Kornberg

D. Hans Adolf Krebs

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Correct Answer: Option D

Explanation:
Hans Adolf Krebs discovered the metabolic pathway of energy conversion in cells in 1937, winning the Nobel Prize in 1953.

This question belongs to: Static General Knowledge Inventions and Discoveries

Question #2

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Who discovered that certain types of biological viruses infect and replicate exclusively inside bacterial cell hosts, establishing 'Bacteriophages'?

A. Frederick Twort and Félix d'Hérelle

B. Robert Koch

C. Dmitri Ivanovsky

D. Louis Pasteur

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Correct Answer: Option A

Explanation:
Twort and d'Hérelle independently isolated filterable bacterial lysis agents, establishing early phage therapeutic concepts.

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Question #3

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Who discovered the first known antibiotic substance produced by soil actinomycetes, Actinomycin?

A. Alexander Fleming

B. Selman Waksman

C. Robert Koch

D. Louis Pasteur

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Correct Answer: Option B

Explanation:
Selman Waksman and his student H. Boyd Woodruff isolated actinomycin in 1940, sparking targeted soil microbe screening programs.

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