General Knowledge - Inventions
Exercise : Inventions - Section 1
- Inventions - Section 1
51.
When were blue jeans invented?
Answer: Option
Explanation:
The first blue jeans were invented by tailor Levi Strauss, who invented tougher working pants for the miners of the California Gold Rush.
52.
Who invented Electric Generator?
53.
What device for new parents did Ann Moore invent in 1969?
Answer: Option
Explanation:
Ann got the idea for the Snugli infant carrier from the traditional African baby carriers she observed while a volunteer for the Peace Corps in Africa.
54.
In which decade was the transistor invented?
Answer: Option
Explanation:
On December 23, 1947, William Shockley, Walter Brattain and John Bardeen, of Bell Labs, announced their discovery of the point-contact germanium transistor to management.
55.
What Igor Sikorsky invented?
Answer: Option
Explanation:
Invented in 1939.
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