Class 7 Science MCQs (Grade 7) From Textbook

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Class 7 Science MCQs – Certification Test 5

Water Treatment Trivia (Question 5) – Learning App & e-Book Download

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MCQ: 5

Fluoride is also added to water, which helps in preventing

  1. infection
  2. sickness
  3. fever
  4. tooth decay
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Water Treatment Exam Prep – Class 7 Science App & e-Book Trivia

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8th Class Science Test Questions

Class 7 Science Quiz with Answers