6
Q:

Find the G.C.F. & L.C.M. of 20 and 28.

 

A) 20,280 B) 5,280
C) 10,140 D) 4,140

Answer:   B) 5,280



Explanation:
Subject: Inventions
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Q:

Who discovered Fullerene (an allotrope of carbon)?

A) K Scheele B) Richard Smalley
C) Faraday D) Heisenberg
 
Answer & Explanation Answer: B) Richard Smalley

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0 492
Q:

Who Invented Laser?

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

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1 712
Q:

Who Invented Lawnmower?

A) Edwin Howard Armstrong B) John Barber
C) Edwin Beard Budding D) Nicholas Callan
 
Answer & Explanation Answer: C) Edwin Beard Budding

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0 508
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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0 539
Q:

Who Invented Electric Stove?

A) Lloyd Groff Copeman B) Bartolomeo Cristofori
C) Leonardo da Vinci D) Philip Diehl
 
Answer & Explanation Answer: A) Lloyd Groff Copeman

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0 588
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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0 505
Q:

World Wide Web was invented by ________.

A) John Barber B) Tim Berners­Lee
C) Alan Blumlein D) David Brewster
 
Answer & Explanation Answer: B) Tim Berners­Lee

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0 540
Q:

Who Invented FM Radio?

A) Edwin Howard Armstrong B) John Barber
C) Edwin Beard Budding D) Nicholas Callan
 
Answer & Explanation Answer: A) Edwin Howard Armstrong

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