Who discovered the presence of the cosmic entity known as the black hole through mathematical solutions to General Relativity equations? MCQ with Answer and Explanation

Question

Who discovered the presence of the cosmic entity known as the black hole through mathematical solutions to General Relativity equations?

A. Subrahmanyan Chandrasekhar

B. Karl Schwarzschild

C. Stephen Hawking

D. Albert Einstein

Answer: Option B

Solution (By JKSSB Mock Tests)

Karl Schwarzschild derived the exact solution for spherical non-rotating point mass objects in 1915, outlining the event horizon radius.

This question belongs to: Static General Knowledge Inventions and Discoveries

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Who discovered that biological chromosomes carry the unique hereditary factor tracking layouts, establishing Chromosome Theory?

A. Gregor Mendel

B. Thomas Hunt Morgan

C. Walter Sutton and Theodor Boveri

D. James Watson

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Correct Answer: Option C

Explanation:
Sutton and Boveri independently identified in 1902 that chromosome pairing and separation match Mendelian inheritance laws.

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Question #2

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Who invented the slide rule, an analog computing tool used extensively before electronic calculators?

A. John Napier

B. Blaise Pascal

C. William Oughtred

D. Gottfried Leibniz

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Correct Answer: Option C

Explanation:
William Oughtred invented the circular and rectilinear slide rule in the 1620s based on John Napier's logarithms.

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Question #3

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Who discovered the presence of cosmic background radiation anisotropy using data from the WMAP satellite instrument?

A. Arno Penzias

B. Robert Wilson

C. Charles L. Bennett and the NASA team

D. Edwin Hubble

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Correct Answer: Option C

Explanation:
The Wilkinson Microwave Anisotropy Probe mapped localized density variations in primordial background energy structures with high precision.

This question belongs to: Static General Knowledge Inventions and Discoveries

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