Class 7 Science Online Tests
Water Treatment MCQ (Multiple Choice Questions) PDF Download
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The Water treatment Multiple Choice Questions (MCQ Quiz) with Answers PDF (Water Treatment MCQ PDF e-Book) download to practice Grade 7 Science Tests. Learn Importance of Water Multiple Choice Questions and Answers (MCQs), Water Treatment quiz answers PDF for homeschool certificate courses. The Water Treatment MCQ App Download: Free learning app for safe and drinking water, fresh water, water treatment test prep for taking online classes.
The MCQ: The tanks that supply water to towns are built at; "Water Treatment" App Download (Free) with answers: Roofs of buildings; High towers; Town level; High lands; for homeschool certificate courses. Solve Importance of Water Quiz Questions, download Google eBook (Free Sample) for free online courses.
Water Treatment MCQs: Questions and Answers PDF Download
Fluoride is also added to water, which helps in preventing
- infection
- sickness
- fever
- tooth decay
The tanks that supply water to towns are built at
- roofs of buildings
- high towers
- town level
- high lands
An addition of small dose of chlorine gas to the filtered water is known as
- coagulation
- sedimentation
- filtration
- chlorination
The process in which water is passed through filter beds of sand and gravel to remove smaller particles of dust is called
- coagulation
- sedimentation
- filtration
- chlorination
Huge strainers are used to
- force water to the treatment plant
- increase the water pressure
- filter large particles in the water
- filter bacteria and other harmful organisms
Class 7 Science Practice Tests
Water Treatment Textbook App: Free Download (iOS & Android)
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7th Grade Science MCQs eBook Download
Grade 6 Science Career Tests
Grade 7 Science Practice Tests
Grade 6 Science MCQ Questions
- Letter used to identify an element in periodic table is known as
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- Function of roots includes
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