Q. Soil, silt washing from land surfaces, fertilizers, insecticides are known as

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Q. Chlorides are mineral salts, and cannot be affected by

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Q. Leftover material in secondary treatment is used as

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Q. Which bacteria can flourish and carry out decomposition of organic matter, both in presence and absence of oxygen?

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Q. Settle out portion of 'sewage' is known as

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Q. What are characteristics of 'domestic' wastewater ?

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Q. Acids and alkalies collectively, change 'pH' value of

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Q. Industrial, municipal sewage, treatment plants are examples of

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Q. 'fixed' solids represents

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Q. What compounds form fats and oils ?

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Q. 'Polychlorinated biphenyls' are by products of plastics, lubricants, rubber and

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Q. Microbiological pollutants, cause sickness in humans, known as

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Q. What causes bad odour in waste treatment plant?

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Q. Which organism respire in absence of oxygen ?

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Q. Pesticide pollution is due to 'leachate' from agricultural and

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Q. Human faeces is main source of organism, in

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Q. What does an inorganic compounds contain ?

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Q. Secondary treatment reduces bacterial load, ranges from

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Q. Composition of sewage water depends on its

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Q. Finely divided solid, remaining either with in solution or in suspension is known as

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