Everyday Inventions — Set 4
Inventions · रोजमर्रा के आविष्कार · Questions 31–40 of 70
The invention of the stethoscope to listen to internal body sounds was by?
Correct Answer: B. Rene Laennec
• **Rene Laennec** = invented the wooden tube stethoscope to listen to internal body sounds. • **1816** — the year Laennec invented the wooden tube stethoscope, allowing more accurate diagnosis of heart and lung conditions. • 💡 Wrong-option analysis: Louis Pasteur: known for pasteurization and vaccines; Joseph Lister: known for antiseptic surgery; Edward Jenner: known for the smallpox vaccine.
Who is credited with the invention of the first successful hovercraft in 1955?
Correct Answer: D. Christopher Cockerell
• **Christopher Cockerell** = invented the first successful hovercraft using an air-cushion design. • **1955** — the year the first successful hovercraft concept was proven, which later became popular for high-speed ferry transport. • 💡 Wrong-option analysis: Frank Whittle: a pioneer of the jet engine; Wernher von Braun: a rocket scientist; James Dyson: known for bagless vacuum cleaners and other household appliances.
The invention of the parachute is often linked to early sketches by which Renaissance polymath?
Correct Answer: B. Leonardo da Vinci
• **Leonardo da Vinci** = made early sketches of a pyramid-shaped parachute in his notebooks. • **1485** — around this year, Da Vinci drew his parachute design, though the first practical parachute was built much later. • 💡 Wrong-option analysis: Michelangelo: famous Renaissance artist known for painting and sculpture; Raphael: a prominent Renaissance painter; Galileo Galilei: an astronomer and physicist, often called the 'father of observational astronomy'.
Who invented the first practical handheld mobile phone in 1973?
Correct Answer: D. Martin Cooper
• **Martin Cooper** = invented the first practical handheld mobile phone while working for Motorola. • **1973** — the year Cooper made the first public mobile phone call, transforming global connectivity. • 💡 Wrong-option analysis: John Mitchell: Cooper's supervisor at Motorola; Bill Gates: co-founder of Microsoft; Steve Jobs: co-founder of Apple Inc.
The invention of the Braille writing system for the blind was by?
Correct Answer: A. Louis Braille
• **Louis Braille** = developed the Braille writing system, a tactile system of raised dots for the blind. • **1824** — the year Braille developed his system at age 15, empowering blind people to read and write independently. • 💡 Wrong-option analysis: Helen Keller: a famous deaf-blind author and activist; Samuel Gridley Howe: a pioneer in education for the blind; Thomas Gallaudet: a pioneer in education for the deaf.
Who is credited with the invention of the first practical airplane in 1903?
Correct Answer: D. Wright Brothers
• **Wright Brothers** = achieved the first controlled, powered, and sustained flight of a heavier-than-air aircraft. • **1903** — the year of the Wright Brothers' historic first flight at Kitty Hawk, marking the birth of aviation. • 💡 Wrong-option analysis: Siemens Brothers: a German engineering and electronics company; Lumiere Brothers: pioneers of cinema; Montgolfier Brothers: invented the hot air balloon.
The invention of the vacuum cleaner, originally a large horse-drawn machine, was by?
Correct Answer: B. Hubert Cecil Booth
• **Hubert Cecil Booth** = invented the first powered vacuum cleaner which sucked up dust, unlike earlier blowers. • **1901** — the year Booth invented his vacuum cleaner, which was initially a large, horse-drawn machine. • 💡 Wrong-option analysis: David Spangler: invented a portable electric vacuum cleaner; William Hoover: bought Spangler's patent and commercialized vacuum cleaners; James Dyson: known for bagless vacuum cleaners and other household appliances.
Who invented the first successful safety match in 1844?
Correct Answer: D. Gustaf Erik Pasch
• **Gustaf Erik Pasch** = invented the safety match by separating chemicals between the match head and the striking surface. • **1844** — the year Pasch invented the first successful safety match, making fire-starting a safe everyday task. • 💡 Wrong-option analysis: Robert Boyle: a prominent chemist and physicist; John Walker: invented the first friction match; Charles Sauria: developed a match using white phosphorus, which was dangerous.
The invention of the first electronic television system is attributed to?
Correct Answer: B. Philo Farnsworth
• **Philo Farnsworth** = developed the first all-electronic television system using a cathode ray tube. • **1927** — the year Farnsworth successfully demonstrated his first electronic television system, which became the industry standard. • 💡 Wrong-option analysis: John Logie Baird: demonstrated the first mechanical television system; Vladimir Zworykin: developed the iconoscope and kinescope, crucial for electronic TV; Paul Nipkow: invented the Nipkow disk, a key component in early mechanical television.
Who invented the first practical typewriter with a QWERTY keyboard layout?
Correct Answer: A. Christopher Sholes
• **Christopher Sholes** = invented the first practical typewriter and developed the QWERTY keyboard layout. • **1874** — the year the first commercial typewriter with a QWERTY keyboard was introduced, preventing mechanical arms from jamming. • 💡 Wrong-option analysis: Samuel Morse: invented the telegraph and Morse code; Thomas Edison: prolific inventor, known for the phonograph and light bulb; Alexander Graham Bell: invented the telephone.