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 Inventions Questions

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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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13 4157
Q:

Who invented logarithms?

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

Explanation:
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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

Explanation:
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14 4031
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

Explanation:
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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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1 3911
Q:

The credit of inventing the tv goes to

A) Philo Farnsworth B) John Logie Baird
C) Philo Farnsworth D) None of the above
 
Answer & Explanation Answer: A) Philo Farnsworth

Explanation:

The credit of inventing the television goes to Philo Farnsworth.

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4 3896
Q:

Who discovered Insulin

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

Explanation:
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3 3889
Q:

 What item, originally called the ‘Whirlwind’, was invented by Ives McGaffey in 1869?

A) Blender B) Electric mixer
C) Washing machine D) Vacuum cleaner
 
Answer & Explanation Answer: B) Electric mixer

Explanation:
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