Inventions MCQs (Grade 8) From Textbook

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Inventions Competitive Exam: Certification Test 114

Letter Box MCQs App & e-Book: MCQ 114

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MCQ: 114

Letter-drop letter box was discovered by

  1. Sir William kennedy Dickson
  2. Sir John Barber
  3. Sir Philip Downing
  4. Sir Louis Pasteur
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8th Class Science Test Questions

8th Class Science Quiz with Answers