Who discovered the first rogue planet candidate? MCQ with Answer and Explanation

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Who discovered the first rogue planet candidate?

A. Both

B. CFBDSIR 2149

C. Multiple

D. PSO J318.5-22

Answer: Option A

Solution (By JKSSB Mock Tests)

Early candidates.

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Question #1

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Who was the first to reach the summit of Mount Kenya?

A. Halford Mackinder

B. Edmund Hillary

C. Eric Shipton

D. Bill Tilman

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Correct Answer: Option A

Explanation:
Mackinder expedition in 1899.

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Question #2

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Which nation was the first to use radar for military purposes?

A. Germany

B. United States

C. Japan

D. United Kingdom

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Correct Answer: Option D

Explanation:
The UK established the 'Chain Home' radar network in the late 1930s.

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Question #3

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Who was the first to reach the summit of Mount Vinson?

A. Expedition team

B. Edmund Hillary

C. Barry Corbet

D. Nicholas Clinch

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Correct Answer: Option A

Explanation:
American expedition in 1966.

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