Question

A mixture (x) in water contains suspended solids, organic impurities, inorganic impurities (a), nutrients (b), disease causing bacteria and other microbes. Givenames for (x), (a) and (b).

  • wastewater story CBSE Class 7
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Answer

(x)–Sewage

(a)–Nitrates, phosphates and metals

(b)–Phosphorus and nitrogen

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