Industrial Era — Set 5
Inventions · औद्योगिक युग · Questions 41–50 of 50
Who is the inventor of the 'Safety Match', allowing for safe and easy fire lighting?
Correct Answer: B. Gustaf Erik Pasch
Gustaf Erik Pasch separated the combustible chemicals so they would only ignite on a specific striking surface. This prevented the accidental fires caused by earlier friction matches. It became a basic household necessity during the industrial era.
The 'Thermometer' using mercury was perfected for accurate temperature measurement by?
Correct Answer: D. Daniel Gabriel Fahrenheit
Daniel Gabriel Fahrenheit invented the mercury-in-glass thermometer in 1714. Mercury allowed for more precise and reliable readings than the alcohol-based devices used previously. He also established the first standardized temperature scale used in science.
Who invented the 'Modern Bicycle' (Safety Bicycle) with two wheels of equal size and a chain drive?
Correct Answer: A. John Kemp Starley
John Kemp Starley created the 'Rover' in 1885, which was much safer than the older 'Penny Farthing' models. This design allowed for stable personal transport for both men and women. It triggered a global bicycle craze and influenced the early automobile industry.
The 'Braille' system for blind reading and writing was developed by?
Correct Answer: B. Louis Braille
Louis Braille lost his sight as a child and developed a system of raised dots based on a military code. His invention allowed blind people to read and write independently. It is now used in almost every language across the world.
Who is credited with inventing the first 'Electric Motor'?
Correct Answer: C. Michael Faraday
Michael Faraday discovered electromagnetic rotation in 1821, which converted electrical energy into mechanical energy. This discovery is the scientific basis for all modern electrical motors. Faraday is considered one of the most influential experimental scientists in history.
The 'Brahm's Press' or Hydraulic Press, which used liquid to multiply force, was invented by?
Correct Answer: A. Joseph Bramah
Joseph Bramah applied Pascal's law to create a machine that could exert immense pressure using water. This invention was vital for heavy industrial tasks like metal forging and baling cotton. It is the foundation of modern hydraulic machinery used today.
Who developed the first successful 'Mercury Vapor Lamp', a precursor to modern street lighting?
Correct Answer: B. Peter Cooper Hewitt
Peter Cooper Hewitt created a lamp in 1901 that produced light by passing an electric current through mercury vapor. While the blue-green light was not suitable for homes, it was very efficient for factories and outdoor areas. This led to the development of modern fluorescent lighting.
The 'Jacquard Loom', which used punched cards to automate complex patterns, was invented by?
Correct Answer: D. Joseph Marie Jacquard
Joseph Marie Jacquard's loom allowed for the automatic weaving of intricate designs like damask and brocade. The use of punched cards to control a machine is often considered a precursor to modern computer programming. This invention revolutionized high-end textile production.
Who invented the 'Rifle' with rifled barrel grooves for better accuracy?
Correct Answer: B. August Kotter
August Kotter is generally credited with introducing spiral grooves into gun barrels in the early 16th century. This rotation stabilized the bullet, making the weapon far more accurate at long distances than smoothbore muskets. It fundamentally changed warfare and hunting.
The first practical 'Submarine', the Turtle, was designed during the American Revolution by?
Correct Answer: A. David Bushnell
David Bushnell created a one-man, hand-powered submarine intended to attach explosives to British ships. Although it was not militarily successful, it was the first submarine to use water as ballast. This paved the way for modern naval underwater technology.