Which is the easiest method for obtaining potable water?

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Correct Answer

Incorrect Answers

Desalination of sea water

Treatment of waste water

Filtration and sterilisation of ground water

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Dried sludge can be used for pesticides.

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True

False

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What is the solid sediment called formed in the primary treatment of sewage?

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Effluent

Sludge

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Screening is the first stage of sewage treatment.

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True

False

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Fill in the blanks

Select the missing words in the text.

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Answer incorrect

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