Inventions Questions and Answers Part-6

1. For what does the world owe Almon Strowger a debt of gratitude?
a) Parking Meters
b) Vending Machines
c) Automatic Telephone Exchanges
d) Traffic Lights

Answer: c
Explanation: He was an undertaker, and legend has it, he developed the automatic switch in 1889, to stop competitors from getting his work.

2. In which decade was the telegraph invented?
a) 1810s
b) 1840s
c) 1870s
d) 1890s

Answer: b
Explanation: The system was completed and public use initiated on May 24, 1844, with transmission of the message, “What hath God wrought!” This inaugurated the telegraph era in the United States, which was to last more than 100 years. Key-type Morse telegraph transmitter from the 1840s. Morse telegraph register from the 1840s.

3. What inspired reflecting road lights to be invented?
a) Car door reflecting mirrors
b) The light a cat's eyes gave off on a fence
c) Sun light on steel posts on road sides
d) The sun light on the windshield

Answer: b
Explanation: In 1933, Englishman Percy Shaw was driving home when he saw a cat's eyes reflecting. He had been headed straight towards a fence with the cat on it, but on the other side was a drop of hundreds of feet.

4. When were blue jeans invented?
a) 1900s
b) 1860s
c) 1870s
d) 1850s

Answer: c
Explanation: On May 20, 1873, San Francisco businessman Levi Strauss and Reno, Nevada, tailor Jacob Davis are given a patent to create work pants reinforced with metal rivets, marking the birth of one of the world's most famous garments: blue jeans.

5. Who invented Electric Generator?
a) Sir Alexander Graham Bell
b) Michael Faraday
c) Alfred B. Nobel
d) Thomas Alva Edison

Answer: b
Explanation: The first electromagnetic generator, the Faraday disk, was invented in 1831 by British scientist Michael Faraday. Generators provide nearly all of the power for electric power grids.

6. Who invented Gunpowder?
a) G. Ferdinand Von Zeppelin
b) Sir Frank Whittle
c) Roger Bacon
d) Leo H Baekeland

Answer: c
Explanation: Roger Bacon invented gunpowder.

7. Until Victorian times, chocolate was thought of as a drink. When did the first chocolate bar appear?
a) 1828
b) 1831
c) 1825
d) There is no sure date

Answer: d
Explanation: No one knows for sure when the first chocolate bar appeared or even who made it, but an important event occurred in 1828. The Van Houten press was invented, which extracted cocoa butter from the bean - the same press that brought the Cadbury Brothers success with Cocoa Essence.

8. What now ubiquitous device was invented by Zenith engineer Eugene Polley in 1955?
a) Microwave oven
b) Remote control
c) VCR
d) Calculator

Answer: b
Explanation: The first wireless remote control for television was called Flashmatic.

9. What Benjamin Franklin invented?
a) Bifocal spectacles
b) Radio
c) Barometer
d) Hygrometer

Answer: a
Explanation: Benjamin Franklin invented bifocal spectacles in 1760.

10. This part-time race car driver invented the bucket seat in 1969. Who was he??
a) Steve McQueen
b) Harrison Frazier
c) Paul Newman
d) John Wayne

Answer: a
Explanation: McQueen invented the bucket seat in 1969.