Question

Which technique is used to purify dirty water?
a. Centrifugation
b Evaporation
c. Sedimentation
d. Decantation

Answer 1

Answer:

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The methods used include physical processes such as filtration, sedimentation, and distillation; biological processes such as slow sand filters or biologically active carbon; chemical processes such as flocculation and chlorination; and the use of electromagnetic radiation such as ultraviolet light..

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Answer 2

Answer:

The methods used include physical processes such as filtration, sedimentation, and distillation; biological processes such as slow sand filters or biologically active carbon; chemical processes such as flocculation and chlorination; and the use of electromagnetic radiation such as ultraviolet light.

Explanation:

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