Everyday Science MCQs 23

The electro-cardiograph was invented by
(a) B. F. Goodrich
(b) Gottlieb Daimler
(c) Karl Benz
(d) William Einthoven-✔️

Stethoscope was invented by
(a) William Shockley
(b) Tim Berners Lee
(c) Chester Carlson
(d) William Stockes-✔️

Spinning frame was invented by
(a) Charles Macintosh
(b) Antoine Joseph Sax
(c) Samuel Morse
(d) Sir Richard Arkwright-✔️

Sodium was discovered by
(a) Sir Humphry Davy-✔️
(b) James Watson
(c) John Bardeen
(d) John von Neumann

Safety matches was invented by
(a) Levi Strauss
(b) Benjamin Franklin
(c) Peter Goldmark
(d) J.E.Lundstrom-✔️

Rayon was invented by
(a) Sir Joseph Swann-✔️
(b) Adolph Rickenbacker
(c) David Brewster
(d) Christopher Cockerell

Radium was discovered by
(a) Willard Libby
(b) Edward Teller
(c) Ernst Haeckel
(d) Marie and Pierrie Curie-✔️

Radioactivity was discovered by
(a) Karl Landsteiner
(b) Konrad Lorenz
(c) Henry Bacquerel-✔️
(d) Edward O. Wilson

Radio valve was invented by
(a) Sir J.A.Fleming-✔️
(b) George Eastman
(c) William Burroughs
(d) Michael Faraday

Nylon was invented by
(a) Dr.Wallace H.Carothers-✔️
(b) Adolph Rickenbacker
(c) David Brewster
(d) Christopher Cockerell