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MCQ on Bulb InventionQuiz Book Download

MCQ: Thomas Edison invented light bulb in

  1. 1889
  2. 1869
  3. 1879
  4. 1883

C

MCQ: Primary inventor of carbon-filament light bulb is

  1. Mary Anderson
  2. Thomas Edison
  3. George Antheil
  4. Victor Adler

B