Q. The thickness of the activated carbon filter bed is ____________

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Q. When activated carbon is applied at more than one point, then it is called ________

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Q. Activated carbon in powder form is applied in the mixing basin.

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Q. Activated carbon can be applied to raw water ______ treatment process.

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Q. The dose of activated carbon in powdered form is controlled by ____________

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Q. What is the dose of copper sulfate required for the treatment of water?

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Q. There are protozoa present in the water. Its name is Dinobryen. What is the dose of copper sulfate required to kill it?

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Q. The fluoride concentration for prevention of dental caries is ____________

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Q. In which process, the fluoride content of water is raised?

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Q. Which of the following is not used as a fluoride compound?

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Q. Which of the following is the pure compound?

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Q. As far as safer handling is considered, which of the following is used for fluoridation?

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Q. Fluorides in solution form are preferred over powdered form for fluoridation.

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Q. What happens when water contains 8-20 ppm of fluoride concentration?

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Q. The process of reducing the fluoride content from water is called _____

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Q. Which of the following is not used for defluoridation?

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Q. At which temperature, the bone is calcinated during defluoridation with calcium phosphate?

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Q. One cubic metre of bone can treat how much quantity of water containing 3.5 ppm of fluoride?

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Q. Which material is used in contact filters for the removal of fluorides?

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Q. Which material is used for removing fluorides from hard water containing 3ppm of fluorides?

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