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प्रश्न
The water treatment methods involve ______ and ______ treatment.
रिकाम्या जागा भरा
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उत्तर
The water treatment methods involve physical and chemical treatment.
Explanation:
Water treatment generally involves physical treatment, such as screening, filtration and sedimentation, and chemical treatment, such as coagulation and disinfection, to remove impurities and make the water safer.
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