Everyday Inventions — Set 7
Inventions · रोजमर्रा के आविष्कार · Questions 61–70 of 70
The invention of the first practical sewing machine is associated with?
Correct Answer: D. Elias Howe
Elias Howe invented the lockstitch mechanism, which allowed machines to sew faster than humans. While Isaac Singer later improved the design, Howe's patent was the original breakthrough. This invention transformed the textile and clothing industry.
Who invented the first successful rigid airship (Zeppelin) in 1900?
Correct Answer: A. Ferdinand von Zeppelin
Count Ferdinand von Zeppelin created large, hydrogen-filled ships with a metal frame. These were the first aircraft used for long-distance commercial flights. They played a major role in early 20th-century aviation history.
The invention of the lightning rod to protect buildings was by?
Correct Answer: A. Benjamin Franklin
Benjamin Franklin invented the lightning rod after his famous experiments with electricity and kites. It provides a path for lightning to safely travel into the ground. This invention has prevented countless fires in buildings over the centuries.
Who invented the first practical battery (Voltaic Pile) in 1800?
Correct Answer: D. Alessandro Volta
Alessandro Volta created the first source of continuous electric current. His battery was made of alternating discs of zinc and copper separated by saltwater-soaked cardboard. The unit of electric potential, the 'Volt', is named in his honor.
The invention of the mercury thermometer is attributed to?
Correct Answer: A. Daniel Gabriel Fahrenheit
Daniel Fahrenheit invented the first reliable thermometer using mercury instead of alcohol. He also created the Fahrenheit scale for measuring temperature. Mercury was ideal because it does not freeze at common winter temperatures.
Who invented the printing press with movable type around 1440?
Correct Answer: A. Johannes Gutenberg
Johannes Gutenberg's press allowed for the mass production of books, which spread knowledge rapidly. It is considered one of the most influential events in human history. The first major book he printed was the Bible.
The first practical helicopter was successfully designed and flown by?
Correct Answer: B. Igor Sikorsky
Igor Sikorsky developed the VS-300, which featured the single main rotor and tail rotor design used by most modern helicopters. His invention allowed for vertical takeoff and landing. Sikorsky is considered the pioneer of the modern helicopter industry.
Who invented the first successful ballpoint pen (Biro) in 1938?
Correct Answer: B. László Bíró
László Bíró was a journalist who noticed that newspaper ink dried quickly. He created a pen with a tiny ball at the tip that rolled ink onto the paper without smudging. The 'Biro' became so popular that it is a common name for pens in many countries.
The invention of dynamite in 1867 was by?
Correct Answer: D. Alfred Nobel
Alfred Nobel invented dynamite as a safer way to use nitroglycerin for blasting rocks and mining. He left his fortune to establish the Nobel Prizes after seeing his invention used for war. Dynamite was a major breakthrough for civil engineering and construction.
Who invented the ballpoint pen?
Correct Answer: B. László Bíró
László Bíró, a Hungarian-Argentine journalist, invented the modern ballpoint pen in 1938. He was frustrated by smudging fountain pen ink. His design used a tiny rotating ball to spread quick-drying ink evenly. In many countries, ballpoint pens are still called 'biros'.