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Which of the following are the suspended solids in the domestic sewage?(a) Ammonia(b) Sand(c) Calcium(d) BacteriaThe question was asked during an interview.This intriguing question originated from Environmental Issues in division Environmental Issues of Biology – Class 12

Answer»

The CORRECT option is (b) SAND

For explanation I would say: The suspended solids like sand, clay, and silt are COMMONLY found in domestic sewage. They are the impurities that are visible and do not dissolve in water. They can be removed EASILY by physical or mechanical means.



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