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. Marie Curie

B. Friedrich Ernst Dorn

C. Ernest Rutherford

D. William Ramsay

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

The invention of the supercomputer was pioneered by which computer scientist who designed the CDC 6600?

A. Gene Amdahl

B. Alan Turing

C. Seymour Cray

D. John von Neumann

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Correct Answer: Option C

Explanation:
Seymour Cray is known as the 'Father of Supercomputing' for designing the fastest operational systems of his era.

This question belongs to: Static General Knowledge Inventions and Discoveries

Question #2

Who discovered the existence of the Van Allen Radiation Belts surrounding the Earth?

A. James Van Allen

B. Robert Goddard

C. Carl Sagan

D. Wernher von Braun

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Correct Answer: Option A

Explanation:
James Van Allen discovered the zones of trapped charged particles around Earth using data from the Explorer 1 satellite in 1958.

This question belongs to: Static General Knowledge Inventions and Discoveries

Question #3

Who discovered that the planet Saturn possesses a wide gap inside its ring bands, known as the Cassini Division?

A. Giovanni Domenico Cassini

B. Galileo Galilei

C. Christiaan Huygens

D. William Herschel

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Correct Answer: Option A

Explanation:
Cassini discovered the distinct gap separating Saturn's A and B rings in 1675 from the Paris Observatory.

This question belongs to: Static General Knowledge Inventions and Discoveries

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