Class VII

FROZEN FOOD - Who discovered the first practical method of freezing food?
  1. C. Birdseye
  2. F. Rozenosh
  3. G. Findus
  4. R. Scott
What George Westinghouse invented?
  1. Light bulb
  2. Electric razor
  3. Refrigerator
  4. Railway air brakes
First human heart transplant operation conducted by Dr. Christiaan Barnard on Louis Washkansky, was conducted in
  1. 1967
  2. 1968
  3. 1958
  4. 1922
Who invented Electric Generator?
  1. Sir Alexander Graham Bell
  2. Michael Faraday
  3. Alfred B. Nobel
  4. Thomas Alva Edison
Who invented the Seed Drill?
  1. Jethro Tull
  2. Arlo Guthrie
  3. Woodie Guthrie
  4. Thomas Hines
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