Who discovered the presence of cosmic background radiation anisotropy using data from the WMAP satellite instrument? MCQ with Answer and Explanation

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

A. Arno Penzias

B. Charles L. Bennett and the NASA team

C. Edwin Hubble

D. Robert Wilson

Answer: Option B

Solution (By JKSSB Mock Tests)

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

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Question #1

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The invention of the modern steam turbine, which enabled large-scale thermal electric power generation, was made by whom?

A. James Watt

B. Charles Parsons

C. George Stephenson

D. Thomas Newcomen

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Correct Answer: Option B

Explanation:
Sir Charles Parsons invented the multi-stage steam turbine in 1884, transforming maritime shipping and electric grids.

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Question #2

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Who discovered the phenomenon of specific biological chemical pathways known as carbon fixation or the dark reactions of photosynthesis?

A. Robert Emerson

B. Hans Krebs

C. Louis Pasteur

D. Melvin Calvin

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Correct Answer: Option D

Explanation:
Melvin Calvin traced the pathway of carbon absorption in plants using carbon-14, establishing the Calvin-Benson Cycle.

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Question #3

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The invention of the common mechanical rotary print engine that accelerated newspaper publishing was patented by whom?

A. William Caxton

B. Johannes Gutenberg

C. Richard March Hoe

D. Christopher Sholes

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Correct Answer: Option C

Explanation:
Richard March Hoe invented the rotary type press in 1843, placing text matrices on revolving drums rather than flat tables.

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