Exercise 2

Question 21 :

What did cardiologist Dr. Paul Zoll invent in Massachusetts in 1952?

B). Artificial heart valve
C). Artificial heart
D). Pacemaker
Answer : Option D

Explanation :

The pacemaker is an electrical device that regulates the heartbeat.

Question 22 :

What Elmer A. Sperry invented?

A). Hydroplane
B). Hydraulic turbine
C). Magnetic compass
D). Gyrocompass
Answer : Option D

Explanation :

Invented in 1911.

Question 23 :

For over 500 years, paper was only available and sold as single sheets. In 1902, an inventive Australian used half size sheets of paper, a bit of glue and cardboard to create the what?

A). Notepad
B). Calendar
C). Notice Board
D). Telephone Book
Answer : Option A

Explanation :

Birchall's of Launceston in Tasmania started selling the world's first notepads, calling them 'Silvercity Writing Tablets' after J A Birchall thought it would be a good idea to back sheets of paper with cardboard and glue them together at the top. His British paper suppliers weren't so keen, but, they were persuaded by Birchall that it was a good idea!

Question 24 :

Who developed the idea of Crop Rotation?

A). Potato Peterson
B). Turnip Townsend
C). Cabbage Carlson
D). Swede Svenson
Answer : Option B

Explanation :

Viscount Charles 'Turnip' Townsend developed this revolutionary concept.

Question 25 :

CORN FLAKES - Who made them first?

A). Nabisco
B). Kellogg
C). Quaker
D). Archers
Answer : Option B

Explanation :

Will Keith Kellogg discovered the corn flake, by mistake, in 1906. They were the result of an experiment which went wrong.