Chemistry · Water Purification
नगर निगम के जल कार्यों (waterworks) में पेयजल शोधन के लिए आमतौर पर उपयोग की जाने वाली प्रक्रियाओं का सही अनुक्रमिक क्रम चुनें: 1. छनन (Filtration) 2. क्लोरीनीकरण (Chlorination) 3. निलंबित अशुद्धि अवसादन (Coagulation/Flocculation) 4. ठोस भारी अशुद्धि अवसादन (Screening/Plain Sedimentation)
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