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NCERT Exemplar Solutions Class 7 Science Solutions for Wastewater Story - Exercise in Chapter 18 - Wastewater Story
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Which of the following is a part of inorganic impurities of the sewage?
Answer:
(c) Phosphates
Explanation:
Pesticides, urea and vegetable waste ate the organic waste that acts as impurities in sewage water whereas phosphates are the inorganic impurities present in sewage
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