Scientists and Inventors

Which American scientist invented the revolver?

• Samuel Colt

• John Browning

• Samuel Walker

• Oliver Winchester

Which scientist among these not contributed for the invention of transistor?

• Walter Brattain

• John Bardeen

• William Shockley

• Linus Pauling

Who is considered as the founder of modern breaking system?

• Armand Peugeot

• Louis Renault

• Carlos Ghosn

• Andre Citronen

Which American scientist invented the submarine in 1776? It was used for the American revolutionary war too.

• David Bushnell

• James Watt

• Thomas Newcomen

• Edmund Cartwright

Which French Scientist invented the Neon lamp in 1910?

• Charles Cros

• Paul Delorme

• Georges Claude

• Guglielmo Marconi

Which American scientist invented the electric elevator (Escalator) in 1891?

• Jesse Reno

• Alexander Miles

• Roger Penske

• Donald Ritter

This German scientist invented PVC(Polyvinyl Chloride). who is he?

• Eugen Baumann

• Waldo Semon

• Carl Schotten

• Herman Von Fehling

Who was the founder of "PUMA" company?

• Horst Dassler

• Armin Dassler

• Rudolf Dassler

• Kasper Roasted

Who invented the fire extinguisher?

• Michael Faraday

• Richard Trevithick

• George William Manby

• James Dewar

Who invented the method of vulcanization of rubber?

• Charles Goodyear

• John Dunlop

• Thomas Hancock

• Charles Macintosh