1
Q:

Helicopter was invented by

A) Drinker B) Broquet
C) Copernicus D) Cockrell

Answer:   B) Broquet

Explanation:
Subject: Inventions
Q:

Which object, initially called the 'Whirlwind', was invented by Ives McGaffey in 1869?

 

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

Explanation:
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1 22
Q:

What charge card, developed in 1950, was the first to be approved nationally in the US?

 

A) Discover B) MasterCharge
C) Visa D) Diner's Club
 
Answer & Explanation Answer: D) Diner's Club

Explanation:

The card was established by Frank McNamara and Ralph Schneider.

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1 27
Q:

We remember Charles Babbage (1792-1871)for what ........

 

A) Computers B) Radio-Telegraphy
C) Steam Boating D) Telescopes
 
Answer & Explanation Answer: A) Computers

Explanation:
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0 19
Q:

In which year was the first solid state integrated circuit demonstrated?

 

A) 1970s B) 1960s
C) 1950s D) 1980s
 
Answer & Explanation Answer: C) 1950s

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0 21
Q:

Who invented Electrocardiograph(EKG)?

Answer

The EKG was invented by Willem Einthoven in 1903 and is used to monitor and analyze past and present heart activity in an individual.

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Subject: Inventions

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