Who discovered that the planet Uranus possesses a distinct set of narrow equatorial rings? MCQ with Answer and Explanation

Who discovered that the planet Uranus possesses a distinct set of narrow equatorial rings?
A. William Herschel
B. Galileo Galilei
C. Giovanni Cassini
D. James L. Elliot, Edward W. Dunham, and Douglas J. Mink
Answer: Option D
Solution (By JKSSB Mock Tests)
The rings of Uranus were discovered in 1977 during airborne stellar occultation observations, when the planet blocked a background star's light.

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Practice More Inventions and Discoveries Questions

Question #1
Who discovered the first recognized hormonal messenger molecule in the human body, Secretin?
A. William Bayliss and Ernest Starling
B. Karl Landsteiner
C. Charles Best
D. Frederick Banting

Correct Answer: Option A


Explanation:
Bayliss and Starling isolated secretin in 1902, discovering chemical signaling loops that function independently of direct nervous inputs.

Question #2
The first practical automatic dishwasher was invented and patented by which female innovator in 1886?
A. Stephanie Kwolek
B. Grace Hopper
C. Josephine Cochrane
D. Mary Anderson

Correct Answer: Option C


Explanation:
Josephine Cochrane designed the first successful hand-powered mechanical dishwasher because she wanted to protect her fine china from chipping.

Question #3
Who discovered that atomic particle paths can be tracked via condensation trails inside gas chambers, establishing the Cloud Chamber?
A. Ernest Rutherford
B. Charles Thomson Rees Wilson
C. J.J. Thomson
D. Robert Millikan

Correct Answer: Option B


Explanation:
C.T.R. Wilson invented the cloud chamber in 1911 to study cloud formations, which became an invaluable tool for nuclear tracking and cosmic ray discoveries.