What are the different types of inorganic and organic impurities generally present in sewage?
ScienceClass 7CBSEAnswered 27 Mar 2026
Answer
Soln:
(i) Inorganic impurities – nitrates, phosphates and metals.
(ii) Organic impurities – fruit and vegetable wastes, oil, urea, human faeces, animal waste, pesticides and herbicides.
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