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?
Who is credited with the invention of the first successful hovercraft in 1955?
The invention of the parachute is often linked to early sketches by which Renaissance polymath?
Who invented the first practical handheld mobile phone in 1973?
The invention of the Braille writing system for the blind was by?
Who is credited with the invention of the first practical airplane in 1903?
The invention of the vacuum cleaner, originally a large horse-drawn machine, was by?
Who invented the first successful safety match in 1844?
The invention of the first electronic television system is attributed to?
Who invented the first practical typewriter with a QWERTY keyboard layout?