CUET Commerce Exam > CUET Commerce Notes > General Test Preparation for CUET UG > Inventors and their Inventions
Inventors and their Inventions | General Test Preparation for CUET UG - CUET Commerce PDF Download
Throughout history, inventors have changed the world a little at a time with their innovations and creations.
It is necessary for students to know about the creators of some of the world’s most important inventions:-
Practice Set of Questions
1. Who invented the kaleidoscope?
a) David Brewster
b) Ole Kirk Christiansen
c) Guglielmo Marconi
d) James Naismith
Ans: The kaleidoscope was invented by the Scottish scientist David Brewster and first publicly announced in 1817.
2. Who invented the Band aid?
a) Virginia Apgar
b) Christian Neethling Barnard
c) Earle Dickson
d) Marion Donovan
Ans: Earle Dickson, a cotton buyer, invented the BAND-AID® Brand adhesive bandage.
3. Who is credited with the invention of bifocals?
a) Benjamin Franklin
b) Ida Henrietta Hyde
c) Robert K. Merton
d) Cesare Lombroso
Ans: Benjamin Franklin, who died 200 years ago, is generally credited with the invention of bifocals. However, serious historians have from time to time produced evidence to suggest that others may have preceded him in the invention.
4. Who is credited with the invention of the dry cell?
a) Alessandro Volta
b) Thomas Edison
c) Georges Leclanche
d) Carl Gassner
Ans: A dry cell is one of the electrochemical cells, developed by the “German scientists Carl Gassner” in 1886,
The document Inventors and their Inventions | General Test Preparation for CUET UG - CUET Commerce is a part of the CUET Commerce Course General Test Preparation for CUET UG.
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FAQs on Inventors and their Inventions - General Test Preparation for CUET UG - CUET Commerce
| 1. Who invented the telephone, and what year was it patented? |  |
Ans. Alexander Graham Bell invented the telephone, and it was patented in 1876.
| 2. What was Thomas Edison’s most significant invention, and how did it impact society? | |
Ans. Thomas Edison’s most significant invention is the electric light bulb. It revolutionized society by providing a reliable and safe source of light, extending productive hours and improving safety in homes and public spaces.
| 3. Can you explain the significance of the Wright brothers' invention? | |
Ans. The Wright brothers, Orville and Wilbur Wright, invented the first successful powered airplane in 1903. This invention is significant as it marked the beginning of the aviation era, transforming transportation and connecting the world through air travel.
| 4. What invention is attributed to Nikola Tesla, and how does it still affect modern technology? | |
Ans. Nikola Tesla is credited with the invention of the alternating current (AC) electrical system. This technology is essential for modern electrical power distribution, allowing electricity to be transmitted over long distances efficiently.
| 5. Who invented the printing press, and what was its impact on society? | |
Ans. Johannes Gutenberg invented the printing press around 1440. Its impact on society was profound, as it facilitated the mass production of books, contributed to the spread of knowledge, and played a key role in the Renaissance and the Reformation.
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