Q. The release of untreated water into the surface water causes deterioration of water quality and its ________

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Q. The diversity of life forms of the water bodies gets affected by the untreated waste water.

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Q. Which of the following is not caused as a result of the altered primary productivity of water bodies?

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Q. Organic and inorganic contaminants can be removed by physical and chemical methods.

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Q. The physical and chemical methods of treating waste water are efficient yet costly.

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Q. The secondary pollution problem is a major concern caused due physical and or chemical purification techniques.

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Q. Which of the following technique is environment friendly and cost effective?

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Q. Biological technique uses catabolic reactions of microorganisms.

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Q. The decomposition of the organic compounds leads conversion of released minerals into usable biomass.

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Q. Which of the following is the main source of eutrophication?

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Q. Which of the following methods can be used to separate phosphates from insoluble precipitates?

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Q. Which of the following organisms represent the natural living style as biofilms?

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Q. The biofilms can be engineered for bio degradation and bio transformation.

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Q. Which of the following compound is broken down by the microbial biofilms in the waste water?

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Q. Pathogens can be removed by action of microbial biofilms.

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Q. __________ method is used for water disinfection.

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Q. Which of following physical methods cannot be used for treatment of waste water?

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Q. Which of the following process involves addition of chemical followed by rapid mixing?

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Q. Efficient wastewater treatment is done by segregating various waste streams and treating them separately.

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Q. Reverse osmosis is used in the treatment of waste water to remove the suspended solids from the water.

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