What are the different types of inorganic and organic impurities generally present in sewage? Open Answer »
A mixture (x) in water contains suspended solids, organic impurities, inorganic impurities (a), nutrients (b), disease causing bacteria and other microbes. Givenames for (x), (a) and (b). Open Answer »
Name two alternative arrangements for sewage disposal where there is no sewerage system. Open Answer »
