106. What George Westinghouse invented?
(a) Light bulb
(b) Electric razor
(c) Refrigerator
(d) Railway air brakes
107. What Karl Benz invented?
(a) Gasoline powered automobile
(b) Streetcar
(c) Glider
(d) Steam turbine
108. Who among the following invented the small pox vaccine?
(a) Robert Koch
(b) Edward Jenner
(c) Robert Hooke
(d) Louis Pasteur
109. What Elisha Otis invented?
(a) The brake used in modern elevators
(b) Jet Engine
(c) Turbine
(d) Hydraulic Crane
110. What Thomas Davenport invented?
(a) Screw propellor
(b) Electric streetcar
(c) Chesterfield
(d) Sleeping (railway) car
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