Primary sludge constitutes which of the following? Options: A . &nbspChemical sludge B . &nbspSettlable solids C . &nbspBiological solids D . &nbspBiological and settlable solids

Primary sludge constitutes which of the following?

Question

Primary sludge constitutes which of the following?

Options:

A . Chemical sludge

B . Settlable solids

C . Biological solids

D . Biological and settlable solids

Answer: Option B
Answer: (b).Settlable solids

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