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Q:

What two scientists established the structure of dna?

A) Rosalind Franklin and Maurice Wilkins B) James Watson and Francis Crick
C) Rosalind Franklin and Francis Crick D) James Watson and Maurice Wilkins

Answer:   B) James Watson and Francis Crick



Explanation:

In the early 1950s two scientists, Rosalind Franklin and Maurice Wilkins, studied DNA using x-rays. Franklin produced an x-ray photograph that allowed two other researchers, James Watson and Francis Crick to work out the 3D structure of DNA. The structure of DNA was found to be a double helix.

Subject: Inventions
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Q:

Who discovered Electron?

A) Enrico Fermi B) Robert Noyce
C) J.J.Thomson D) James Dyson
 
Answer & Explanation Answer: C) J.J.Thomson

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Q:

Who discovered Photon?

A) George Crum B) Albert Einstein
C) Henry Cavendish D) Humphry Davy
 
Answer & Explanation Answer: B) Albert Einstein

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Q:

Who discovered Uranus?

A) Sir Isaac Newton B) William Henry Fox Talbot
C) William Herschel D) Nicolaus Copernicus
 
Answer & Explanation Answer: C) William Herschel

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Q:

Who invented Space Pen?

A) Paul C. Fisher B) Rudolf Diesel
C) Wright Brothers D) Alexander Fleming
 
Answer & Explanation Answer: A) Paul C. Fisher

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Q:

General anaesthetic was invented by?

A) Alfred P. Southwick B) Isaac Singer
C) Murasaki Shikibu D) Hanaoka Seishū
 
Answer & Explanation Answer: D) Hanaoka Seishū

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Q:

Who invented E­Mail?

A) Tim Berners­-Lee B) James Gosling
C) Vinton Cerf D) VA Shiva Ayyadurai
 
Answer & Explanation Answer: D) VA Shiva Ayyadurai

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Q:

Dynamite was invented by?

A) Jean-Antoine Nollet B) Alfred Nobel
C) Joseph Nicephore Niepce D) Ted Nelson
 
Answer & Explanation Answer: B) Alfred Nobel

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Q:

Who Invented Ceiling fan?

A) Lloyd Groff Copeman B) Bartolomeo Cristofori
C) Leonardo da Vinci D) Philip Diehl
 
Answer & Explanation Answer: D) Philip Diehl

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