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 Inventions Questions

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Q:

The Solar System was discoverd by

A) Galleleo B) Finsen
C) Copernicus D) None of these
 
Answer & Explanation Answer: C) Copernicus

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Q:

The cause of Beri Beri was discovered by

A) Eijkman B) Macmillan
C) Alexanderson D) Cockrell
 
Answer & Explanation Answer: A) Eijkman

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Q:

Telegrahic code was introduced by

A) Lipman B) Macmillan
C) Thomas Moore D) Cockrell
 
Answer & Explanation Answer: C) Thomas Moore

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Q:

Who invented the battery?

A) John Wilkinson B) Alessandro Volta
C) James Hargreaves D) Thomas Edison
 
Answer & Explanation Answer: B) Alessandro Volta

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Q:

Toricelli invented

A) Automobile B) Barometer
C) Stethoscope D) None of these
 
Answer & Explanation Answer: B) Barometer

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Q:

Telegrahic code was introduced by

A) Lipman B) Macmillan
C) Thomas Moore D) Cockrell
 
Answer & Explanation Answer: C) Thomas Moore

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1 2023
Q:

The value of (sin0+cos0)2=

A) 1+sin20 B) sin20 +cos20
C) 1+ 2cos0sin0 D)
 
Answer & Explanation Answer: D)

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2 1858
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 & Explanation 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.

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