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Subjects
Science CBSE
Class 7
Wastewater Story
Textbook questions
25.
NCERT Exemplar XII
Exercise condition:
3
m.
Name two inorganic impurities present in sewage.
Sewage contains inorganic pollutants such as
pesticides
surfactants
metals
,
pesticides
phosphates
surfactants
, and
nitrates
pesticides
surfactants
. Sewage is a complex mixture of microorganisms, suspended particles, nutrients, pathogenic and saprotrophic bacteria, and organic and inorganic pollutants.
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