Inventions Questions

Q:

Typewriter was invented by

A) Shockley B) Sholes
C) Howe D) None of these
 
Answer & Explanation Answer: B) Sholes

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Q:

Who invented waterproof fabrics ?

A) James Dewar B) Charles Goodyear
C) Mary Moore D) Charles Macintosh
 
Answer & Explanation Answer: D) Charles Macintosh

Explanation:

Charles Macintosh (29 December 1766 – 25 July 1843) was a Scottish chemist and inventor of waterproof fabrics.He devoted all his spare time to science, particularly chemistry, and before he was twenty resigned his clerkship to take up the manufacture of chemicals. In this he was highly successful, inventing various new processes. His experiments with one of the by-products of tar, naphtha, led to his invention of waterproof fabrics.

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Q:

Who invented logarithms?

A) Mandeleef B) Shockley
C) Amundson D) John Napier
 
Answer & Explanation Answer: D) John Napier

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Q:

App to locate board exam centre for students launched by ?

A) CBSE B) IIT
C) JNU D) NCERT
 
Answer & Explanation Answer: A) CBSE

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Q:

Who discovered Insulin

A) William Harvey B) Louis Pasteur
C) F.G.Banting D) Alexander Fleming
 
Answer & Explanation Answer: D) Alexander Fleming

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Q:

Who Invented Contact Lens ?

A) Joel Houghton B) Ruth Graves Wakefield
C) Adolf Gaston Eugen Fick D) John Stith Pemberton
 
Answer & Explanation Answer: C) Adolf Gaston Eugen Fick

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Q:

Who invented Electric Generator?

A) Michael Faraday B) Thomas Alva Edison
C) Graham Bell D) Alfred Nobel
 
Answer & Explanation Answer: A) Michael Faraday

Explanation:

Michael Faraday invented Electric Generator in 1831.

 

        • The operating principle of electromagnetic generators was discovered in the years of 1831–1832 by Michael Faraday.

 

        • The principle later called Faraday's law, is that an electromotive force is generated in an electrical conductor which encircles a varying magnetic flux.


 

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Q:

Who is the inventor of  printing press?

A) Johann Gutenberg B) William Lee
C) George Eastman D) R.W Thomson
 
Answer & Explanation Answer: A) Johann Gutenberg

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