Cotton Gin MCQs Questions and Answers PDF Book Download

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MCQ on Cotton GinQuiz Book Download

MCQ: Cotton gin was invented by Eli Whitney in

  1. 1792
  2. 1793
  3. 1790
  4. 1795


MCQ: Screw was invented in 3rd century B.C by

  1. Archimedes
  2. Magellan
  3. Alexander
  4. Franklin