Q. The optimum growth temperature of nitrifying bacteria is __________

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Q. Nitrifying bacteria cannot survive at 0° C.

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Q. Nitrogen is returned back into the atmosphere by the activity of _________

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Q. Nitric acid is formed during oxidation of ammonia.

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Q. Sewage treatment plant for the removal of phosphate in an activated sludge system is called as ________

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Q. Enhanced biological phosphorus removal implementation is done in an anaerobic tank.

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Q. The removal of phosphorous from wastewater involves the unification of __________ and then removal from the solids?

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Q. Which of the following adding would to remove the inorganic forms of phosphate?

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Q. The total fraction from COD that can be biodegraded by microorganisms is rbCOD.

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Q. ______________ causes sun block and prevent from reaching lower waters.

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Q. Which of the following methods cannot be used for removing heavy metals from waste water?

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Q. Which of the following food doesn’t detoxify our body by removing heavy metals?

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Q. The process of uptake heavy metals from wastewater is called as Biosorption.

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Q. Which of the following is not a potential metal biosorbents?

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Q. Which of the following doesn’t lead to toxicity of waste water?

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Q. Heavy metals in water bodies leads to an increase in wastewater treatment cost.

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Q. The accumulation of definite metals in the body due to certain exposures is called as Heavy metal poisoning.

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Q. What are the symptoms of heavy metals in the body?

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Q. The detection of heavy metals in drinking water supplies is extremely easy.

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Q. How much time does take for Mercury to leave the body?

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