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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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Q:

Who Invented Elevator Safety Brake ?

A) Alfred Bernhard Nobel B) Elisha Graves Otis
C) Percy LeBaron Spencer D) Garrett Augustus Morgan
 
Answer & Explanation Answer: B) Elisha Graves Otis

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Q:

Who Invented Dynamite Explosive Material?

A) Alfred Bernhard Nobel B) Levi Strauss
C) Percy LeBaron Spencer D) Garrett Augustus Morgan
 
Answer & Explanation Answer: A) Alfred Bernhard Nobel

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Q:

Who Invented Worldwide Standard Time Zones ?

A) Charles Richard Drew B) Henry W. Seely
C) Jesse Wilford Reno D) Sir Sandford Fleming
 
Answer & Explanation Answer: D) Sir Sandford 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:

What J. B. Dunlop invented?

A) Pneumatic rubber tire B) Automobile wheel rim
C) Rubber boot D) Model airplanes
 
Answer & Explanation Answer: A) Pneumatic rubber tire

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Q:

What Henry Bessemer invented?

A) Aluminum B) Electroplating
C) Steel Converter D) Steel rolling mill
 
Answer & Explanation Answer: C) Steel Converter

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Q:

Ralph Samuelson was only 18 when he invented this sporting item in 1922. What was that?

A) Golf tee B) Motorboat
C) Water skis D) Hang glider
 
Answer & Explanation Answer: C) Water skis

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