Top 150 Inventions||Inventions and discoveries GK in The world||English || Free PDF
41. Who invented the first practical submarine?
a) John Philip Holland
b) Cornelis Drebbel
c) David Bushnell
d) Robert Fulton
42. The inventor of the first successful vaccine for smallpox was:
a) Louis Pasteur
b) Robert Koch
c) Edward Jenner
d) Jonas Salk
43. Who invented the first successful mechanical calculator?
a) Blaise Pascal
b) Charles Babbage
c) Wilhelm Schickard
d) Gottfried Wilhelm Leibniz
44. The inventor of the first practical typewriter was:
a) Christopher Latham Sholes
b) Thomas Edison
c) Alexander Graham Bell
d) Samuel Morse
45. Who invented the theory of evolution by natural selection?
a) Charles Darwin
b) Gregor Mendel
c) Alfred Russel Wallace
d) Carl Linnaeus
46. The first person to develop a working parachute was:
a) Leonardo da Vinci
b) Louis-Sébastien Lenormand
c) André-Jacques Garnerin
d) Otto Lilienthal
47. Who invented the electric generator?
a) Michael Faraday
b) Nikola Tesla
c) Thomas Edison
d) Alexander Graham Bell
48. The inventor of the first synthetic plastic was:
a) John Wesley Hyatt
b) Alexander Parkes
c) Leo Baekeland
d) Wallace Carothers
49. Who invented the concept of the World Wide Web?
a) Tim Berners-Lee
b) Bill Gates
c) Steve Jobs
d) Mark Zuckerberg
50. The inventor of the first practical artificial heart was:
a) Robert Jarvik
b) Willem Kolff
c) Paul Winchell
d) Barney Clark
Inventions and discoveries GK in The world
51. Who invented the first commercial radio?
a) Guglielmo Marconi
b) Nikola Tesla
c) Lee De Forest
d) Edwin Armstrong
52. The inventor of the stethoscope is:
a) René Laennec
b) Wilhelm Roentgen
c) Andreas Vesalius
d) William Harvey
53. Who invented the first successful refrigerator?
a) James Harrison
b) John Gorrie
c) Carl von Linde
d) William Cullen
54. The inventor of the first commercially successful machine gun was:
a) Richard Gatling
b) Hiram Maxim
c) John Browning
d) Samuel Colt
55. Who invented the electric washing machine?
a) Alva J. Fisher
b) James King
c) William Blackstone
d) Louis Goldenberg
56. The inventor of the modern air conditioner is:
a) Willis Carrier
b) Nikola Tesla
c) Michael Faraday
d) John Gorrie
57. Who invented the diesel engine?
a) Rudolf Diesel
b) Nikolaus Otto
c) Gottlieb Daimler
d) Karl Benz
58. The first person to develop the theory of electromagnetic waves was:
a) James Clerk Maxwell
b) Heinrich Hertz
c) Michael Faraday
d) Nikola Tesla
59. Who invented the escalator?
a) Jesse W. Reno
b) Elisha Otis
c) Alexander Miles
d) Archimedes
60. The inventor of the first practical electric razor was:
a) Jacob Schick
b) King C. Gillette
c) Otto Rohwedder
d) Charles Babbage
Inventions and discoveries GK in The world
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