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Q:

Who Invented Post-it note?

A) William Friese-Greene B) Arthur Fry
C) Gordon Gould D) Otto von Guericke
 
Answer & Explanation Answer: B) Arthur Fry

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Q:

Who Invented Dishwasher?

A) Vint Cerf B) David Chaum
C) Georges Claude D) Josephine Cochrane
 
Answer & Explanation Answer: D) Josephine Cochrane

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Q:

Who discovered Electron?

A) Niels Bohr B) J.J. Thomson
C) Abert Einstein D) Ernest Rutherford
 
Answer & Explanation Answer: B) J.J. Thomson

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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 invented the thermos flask?

A) Ray Tomlinson B) Tim Berners-Lee
C) William Cullen D) James Dewar
 
Answer & Explanation Answer: D) James Dewar

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Q:

Which of the following was invented by Sir Humphry Davy?

A) Safety Pin B) Steam Engine
C) Safety Lamp D) X-Rays
 
Answer & Explanation Answer: C) Safety Lamp

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Q:

Who Invented Neon Lamp?

A) Vint Cerf B) David Chaum
C) Georges Claude D) Josephine Cochrane
 
Answer & Explanation Answer: C) Georges Claude

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Q:

Who invented Space Pen?

A) Paul C. Fisher B) Rudolf Diesel
C) Wright Brothers D) Alexander Fleming
 
Answer & Explanation Answer: A) Paul C. Fisher

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