Class 7 Online Courses

Class 7 science Practice Tests


Class 7 Science Tests

Water Treatment MCQ Quiz PDF Download

The Book Water treatment Multiple Choice Questions (MCQ Quiz) PDF, water treatment MCQs download to study online 7th grade science courses. Practice Importance of Water Multiple Choice Questions and Answers (MCQs), Water Treatment quiz answers PDF for online school and college. The eBook Water Treatment MCQ App Download: safe and drinking water, fresh water, water treatment test prep for online elementary school.

The MCQ: Fluoride is also added to water, which helps in preventing PDF, Water Treatment App Download (Free) with infection, sickness, fever, and tooth decay choices for online school and college. Solve importance of water quiz questions, download Google eBook (Free Sample) for online degree programs.


Class 7 Science: Water Treatment MCQs PDF Download

MCQ: Fluoride is also added to water, which helps in preventing

A) infection
B) sickness
C) fever
D) tooth decay

MCQ: The tanks that supply water to towns are built at

A) roofs of buildings
B) high towers
C) town level
D) high lands

MCQ: An addition of small dose of chlorine gas to the filtered water is known as

A) coagulation
B) sedimentation
C) filtration
D) chlorination

MCQ: The process in which water is passed through filter beds of sand and gravel to remove smaller particles of dust is called

A) coagulation
B) sedimentation
C) filtration
D) chlorination

MCQ: Huge strainers are used to

A) force water to the treatment plant
B) increase the water pressure
C) filter large particles in the water
D) filter bacteria and other harmful organisms

Practice Tests: Class 7 Science Exam Prep

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