The discovery of the first pulsar (rotating neutron star) was achieved by which astrophysicist in 1967? MCQ with Answer and Explanation

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The discovery of the first pulsar (rotating neutron star) was achieved by which astrophysicist in 1967?

A. Subrahmanyan Chandrasekhar

B. Antony Hewish

C. Fred Hoyle

D. Jocelyn Bell Burnell

Answer: Option D

Solution (By JKSSB Mock Tests)

Jocelyn Bell Burnell discovered the first radio pulsars as a postgraduate student, although her advisor Antony Hewish received the Nobel Prize.

This question belongs to: Static General Knowledge Inventions and Discoveries

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Who invented the radar (Radio Detection and Ranging) system used by Britain during World War II?

A. Robert Watson-Watt

B. Alan Turing

C. Guglielmo Marconi

D. Heinrich Hertz

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Correct Answer: Option A

Explanation:
Sir Robert Watson-Watt developed the first practical and deployable radar tracking systems for aircraft tracking.

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Question #2

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Who invented the fountain pen with an efficient ink capillary feed mechanism in 1884?

A. László Bíró

B. Lewis Waterman

C. John Loud

D. William Thompson

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Correct Answer: Option B

Explanation:
Lewis Edson Waterman patented the first practical fountain pen with a reliable ink feed mechanism.

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Question #3

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Who discovered that plant chromosomes undergo meiosis and crossing over, establishing physical genetic maps?

A. Hugo de Vries

B. Thomas Hunt Morgan

C. Charles Darwin

D. Gregor Mendel

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Correct Answer: Option B

Explanation:
Thomas Hunt Morgan demonstrated chromosome mapping and sex-linked inheritance using Drosophila melanogaster (fruit flies).

This question belongs to: Static General Knowledge Inventions and Discoveries

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