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Q:

In the 1700s,who would pay the postage fee for letters before the stamp was invented?

A) The sender B) There was no fee
C) The receiver of the letter D) The post office

Answer:   C) The receiver of the letter

Explanation:

Later in 1840, Rowland Hill invented the stamp, which was paid for by the sender, not the receiver.

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 23
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 28
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

Explanation:
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0 32
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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