Q.26 What is the name of the inventor of the Camera (flexible roll film) Photographic film (using celluloid)?
Ans. George Eastman in 1888-1889
Q.27 The Swiss Army knife is invented by—
Ans. Karl Elsner in 1891.
Q.28 When was the Electric washing machine invented?
Ans. 1908,1910 (patent) by Alva Fisher.
Q.29 Who is the inventor of Penicillin?
Ans. Alexander Fleming in 1928.
Q.30 Who invented Machine gun?
Ans. Richard Jordan Gatling in 1862.
Q.31 Who invented Rocket, liquid-fueled (first launch)?
Ans. Robert Goddard in 1926.
Q.32 Who is the inventor of the submarine?
Ans. Cornelis Dribble.
Q.33 Who is the inventor of Refrigerator?
Ans. Carl Paul Gottfried von Linde.
Q.34 When was Pacemaker (artificial, implantable) invented?
Ans. in 1960 (first implant) by Wilson Greatbatch.
Q.35 Who invented Microscope (compound)?
Ans. Hans Janssen in 1590.
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