Everyday Inventions — Set 6
Inventions · रोजमर्रा के आविष्कार · Questions 51–60 of 70
The first practical mechanical computer, the 'Difference Engine', was designed by?
Correct Answer: A. Charles Babbage
Charles Babbage is known as the 'father of the computer'. He designed machines that could perform complex mathematical calculations automatically. His concepts were the precursors to modern electronic computers.
Who invented the first safety razor with disposable blades in 1901?
Correct Answer: A. King Camp Gillette
King Camp Gillette developed a thin, cheap, and disposable steel blade. This allowed men to shave safely at home without needing to sharpen a straight razor. His business model of selling the handle cheap and the blades expensive is still used today.
The invention of the World Wide Web (WWW) was by which computer scientist in 1989?
Correct Answer: D. Tim Berners-Lee
Tim Berners-Lee created the system of hyperlinks to allow scientists to share data easily. He wrote the first web server and the first web browser. His invention transformed the internet into a global information platform.
Who is credited with the invention of the first practical light bulb in 1879?
Correct Answer: D. Thomas Edison
Thomas Edison created a bulb with a carbon filament that could burn for over 13 hours. While others had made bulbs, his was the first that was commercially practical for home use. He also developed the entire electrical system needed to power them.
The first successful radio transmission was achieved by which Italian inventor?
Correct Answer: C. Guglielmo Marconi
Guglielmo Marconi developed a system of wireless telegraphy to send signals over long distances. He won the Nobel Prize in Physics for his contribution to radio communication. His work was essential for the development of modern telecommunications.
Who invented the first practical steam locomotive, 'The Rocket', in 1829?
Correct Answer: D. George Stephenson
George Stephenson is known as the 'Father of Railways'. His locomotive design set the standard for early rail transport. He also pioneered the use of a standard track gauge that is still used in many countries.
The invention of the stethoscope in 1816 is attributed to?
Correct Answer: D. Rene Laennec
Rene Laennec invented the stethoscope to help listen to the heart and lungs of patients. He originally used a rolled-up cylinder of paper before creating a wooden version. It remains one of the most iconic tools in medicine.
Who invented the first modern internal combustion engine powered by gasoline in 1876?
Correct Answer: B. Nicolaus Otto
Nicolaus Otto developed the four-stroke engine, which is the basis for most car engines today. This cycle of intake, compression, power, and exhaust is known as the 'Otto cycle'. This invention paved the way for the automotive revolution.
The first practical barometer for measuring air pressure was invented by?
Correct Answer: B. Evangelista Torricelli
Evangelista Torricelli used a column of mercury to demonstrate the existence of atmospheric pressure. His discovery led to the development of weather forecasting instruments. The unit 'Torr' is named after him to honor his work.
Who is credited with the invention of the first successful telephone in 1876?
Correct Answer: B. Alexander Graham Bell
Alexander Graham Bell was the first to receive a patent for a device that transmitted speech electrically. His invention completely changed how people communicate across distances. The first words spoken over the phone were to his assistant, Mr. Watson.