Inventions Questions

Q:

Who dicovered X-rays?

Answer

In 1985 the physicist Wilhelm Rontgen discovered X-rays, the "X" signifying their unknown origin.He later found that the rays could pass through flesh and by using photographic plates could make images of bones inside the body. 

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Q:

Roentgen discovered

A) Electrocardiograph B) X–rays
C) Anti polio vaccine D) Encephalograph
 
Answer & Explanation Answer: B) X–rays

Explanation:
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Q:

Who invented Radar ?

Answer

Robert Watson Watt

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Q:

When was Barb Wire patented

A) 1898 B) 1868
C) 1874 D) 1866
 
Answer & Explanation Answer: C) 1874

Explanation:

Joseph F. Glidden - Father of Barbed Wire.

      • Glidden was born in New York in 1812. He invented Barbed Wire in 1873 and was granted the patent on Nov. 24, 1874. After a three year battle over the patent, which he eventually won received a patent for the modern invention in 1874 after he made his own modifications to previous versions.
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Q:

Who Invented Traffic Signal ?

A) Lewis Edson Waterman B) Levi Strauss
C) Percy LeBaron Spencer D) Garrett Augustus Morgan
 
Answer & Explanation Answer: D) Garrett Augustus Morgan

Explanation:
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Q:

The first gasoline-run car engine was developed by

 

A) Henry Ford B) Carl Benz
C) Hugh Chalmers D) Horace Elgin Dodge
 
Answer & Explanation Answer: B) Carl Benz

Explanation:
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Q:

Twice the difference between two numbers is equal to their sum. If one number is 15,find the other number.

 

A) 15 B) 10
C) 5 D) 20
 
Answer & Explanation Answer: C) 5

Explanation:
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Q:

Fax machine was invented by

A) Daimler B) Dewar
C) Bain D) None of these
 
Answer & Explanation Answer: C) Bain

Explanation:
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