Who discovered the first multi-planet system? MCQ with Answer and Explanation

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Who discovered the first multi-planet system?

A. Both

B. Kepler

C. Aleksander Wolszczan

D. Pulsar planets

Answer: Option C

Solution (By JKSSB Mock Tests)

Wolszczan discovered around pulsar.

This question belongs to: Static General Knowledge First in the World

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Question #1

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Who was the first person to prove the Earth is a sphere?

A. Pythagoras

B. Eratosthenes

C. Ptolemy

D. Aristotle

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Correct Answer: Option D

Explanation:
Aristotle provided observational evidence for the Earth being a sphere in the 4th century BCE.

This question belongs to: Static General Knowledge First in the World

Question #2

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Who discovered the electron microscope?

A. Both

B. J.J. Thomson

C. Max Knoll

D. Ernst Ruska

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Correct Answer: Option A

Explanation:
Ruska and Knoll developed the electron microscope.

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Question #3

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Who was the first woman to win the Best Costume Design Oscar?

A. Edith Head

B. Orry-Kelly

C. Helen Rose

D. Irene Sharaff

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Correct Answer: Option A

Explanation:
Edith Head won multiple.

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