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Inventions MCQs (Grade 8) From Textbook

Inventions MCQs – Certification Test 721

Slinky Trivia (Question 721) – App & e-Book Download

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MCQ 721: Slinky were discovered by:

  1. Sir Richard
  2. Sir Betty James
  3. Sir Walter Wingfield
  4. both a and b
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8th Class Science Test Questions

8th Class Science Quiz with Answers