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Q:

Who invented waterproof fabrics ?

A) James Dewar B) Charles Goodyear
C) Mary Moore D) Charles Macintosh

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.

Subject: Inventions
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Q:

Who invented the vacuum pump?

A) Otto von Guericke B) Cai Lun
C) Melitta Bentz D) William Henry Fox Talbot
 
Answer & Explanation Answer: A) Otto von Guericke

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Q:

Who invented bluetooth?

A) Kirkpatrick Macmillan B) Benjamin Franklin
C) Dr. Jaap Haartsen D) Charles Babbage
 
Answer & Explanation Answer: C) Dr. Jaap Haartsen

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Q:

Who discovered the colour photography?

A) Robert Noyce B) Enrico Fermi
C) John Logie Baird D) James Clerk Maxwell
 
Answer & Explanation Answer: D) James Clerk Maxwell

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0 12
Q:

Who invented the electrocardiogram (ECG)?

A) Willem Einthoven B) Edward Jenner
C) Antonio de Ulloa and Charles Wood D) Karl Benz
 
Answer & Explanation Answer: A) Willem Einthoven

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Q:

Who discovered Sodium?

A) Humphry Davy B) William Henry Fox
C) J.J.Thomson D) Karl Benz
 
Answer & Explanation Answer: A) Humphry Davy

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0 22
Q:

Who invented the waterproof raincoat?

A) Robert Hooke B) Cai Lun
C) Charles Macintosh D) William Harvey
 
Answer & Explanation Answer: C) Charles Macintosh

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Q:

Who discovered Penicillin?

A) Edward Jenner B) Niels Bohr
C) Sir Alexander Fleming D) Heinrich Hertz
 
Answer & Explanation Answer: C) Sir Alexander Fleming

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0 22
Q:

Who discovered electricity and invented the lightning rod and bifocals?

A) Kirkpatrick Macmillan B) Benjamin Franklin
C) William Henry Fox Talbot D) Sir Alexander Fleming
 
Answer & Explanation Answer: B) Benjamin Franklin

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