Download Class 7 Science Learning App | Water Treatment e-Book PDF

Class 7 Science MCQs (Grade 7) From Textbook

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 Trivia App & e-Book – Class 7 Science Exam Prep

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Water Treatment Trivia App

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7th Grade Science Trivia App

Download the Earth Science Trivia App: Free Android & iOS Apps

Earth Science Trivia App

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8th Grade Science Trivia App

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Class 7 Science Trivia PDF Book

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8th Class Science Test Questions

Class 7 Science Quiz with Answers