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Class 7 Science MCQs (Grade 7) From Textbook

Class 7 Science MCQs – Certification Test 444

Water Treatment Quiz (Question 444) – App & e-Book Download

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MCQ 444: Huge strainers are used to:

  1. force water to the treatment plant
  2. increase the water pressure
  3. filter large particles in the water
  4. filter bacteria and other harmful organisms
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