31. | When was the first lawn mower invented? |
a. | 1830 |
b. | 1854 |
c. | 1835 |
d. | 1849
|
32. |
In which decade were the first successful diode and triode vacuum tubes invented?
|
a. | 1800s |
b. | 1880s |
c. | 1890s |
d. | 1900s
|
33. | Who is the English physicist responsible for the ‘Big Bang Theory’? |
a. | |
b. | |
c. | |
d. |
|
34. | What ‘game’ was first produced by the Southern Novelty Company in Baltimore, Maryland in 1892? |
a. | Frisbee |
b. | Monopoly |
c. | |
d. |
|
35. | Which insurance salesman invented the fountain pen in 1884? |
a. | |
b. | |
c. | |
d. |
|
36. | What invention is credited to the Russian born American inventor Vladimir Kosma Zworykin? |
a. | Telegraph |
b. | Radio |
c. | Television |
d. | Dishwasher
|
37. | Benjamin Franklin was a prolific inventor. He invented the lightning rod, the Franklin stove, studied electricity, discovered the Gulf Stream, started the first library, and on and on. Among his many other inventions, what musical instrument did he invent? |
a. | Banjo |
b. | Oboe |
c. | Clarinet |
d. |
|
38. | What Thomas Davenport invented? |
a. | |
b. | |
c. | Chesterfield |
d. |
|
39. | What Elisha Otis invented? |
a. | |
b. | |
c. | Turbine |
d. |
|
40. | Where was the yo-yo invented? |
a. | France |
b. | |
c. | Philippines |
d. | England
|
What is invention of cell
Roberrt Hooke
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