Who discovered the radioactive gas Radon in 1900? MCQ with Answer and Explanation

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Who discovered the radioactive gas Radon in 1900?

A. William Ramsay

B. Friedrich Ernst Dorn

C. Marie Curie

D. Ernest Rutherford

Answer: Option B

Solution (By JKSSB Mock Tests)

Friedrich Ernst Dorn discovered radon while studying the radioactive decay chain of radium emissions.

This question belongs to: Static General Knowledge Inventions and Discoveries

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Question #1

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

A. Hans Adolf Krebs

B. Louis Pasteur

C. Melvin Calvin

D. Arthur Kornberg

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Correct Answer: Option A

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

Alexander Fleming discovered penicillin, the world's first effective antibiotic, in which year?

A. 1928

B. 1935

C. 1918

D. 1942

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Correct Answer: Option A

Explanation:
Sir Alexander Fleming discovered penicillin in 1928 at St. Mary's Hospital, London, after noticing a mold contaminating a petridish of staphylococci.

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Question #3

Who discovered circulation of blood in the human body?

A. Andreas Vesalius

B. Robert Hooke

C. William Harvey

D. Karl Landsteiner

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Correct Answer: Option C

Explanation:
William Harvey was an English physician who correctly described the systemic circulation and properties of blood being pumped to the brain and body by the heart.

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