General Knowledge - Inventions
Exercise : Inventions - Section 1
- Inventions - Section 1
71.
What did cardiologist Dr. Paul Zoll invent in Massachusetts in 1952?
Answer: Option
Explanation:
The pacemaker is an electrical device that regulates the heartbeat.
72.
What Elmer A. Sperry invented?
Answer: Option
Explanation:
Invented in 1911.
73.
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?
Answer: Option
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!
74.
Who developed the idea of Crop Rotation?
Answer: Option
Explanation:
Viscount Charles 'Turnip' Townsend developed this revolutionary concept.
75.
CORN FLAKES - Who made them first?
Answer: Option
Explanation:
Will Keith Kellogg discovered the corn flake, by mistake, in 1906. They were the result of an experiment which went wrong.
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