Ozonation as a water purification method has an advantage over chlorination because:

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Ozone (O₃) is a powerful disinfectant that decomposes to oxygen, leaving no toxic residues or taste. Chlorination can form carcinogenic trihalomethanes (THMs) with organic matter. However, ozone is more expensive, must be generated on-site, and leaves no residual protection in distribution system, often requiring a small chlorine dose. Ozonation also removes color and odor. Both kill bacteria and viruses.

Ozonation as a water purification method has an advantage over chlorination because: MCQ with Answer and Explanation

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