Q. The number of stages required for the completion of aerobic oxidation is __________

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Q. Which of the following is formed from oxidation of organic matter in the presence of oxygen?

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Q. The energy released during the anaerobic oxidation of organic matter is _____ kilo calories.

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Q. _____ is the amount of oxygen required to oxidize only organic matter in sewage.

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Q. The full form of BOD is __________

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Q. The biochemical oxygen demand is computed by __________

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Q. The value of deoxygenation constant is independent of the temperature.

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Q. The average standard BOD of domestic sewage is measured in ____________

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Q. Which of the following id the correct expression of population equivalent?

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Q. The expression of relative stability at 20°C is given by ___________

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Q. The expression of relative stability at 37°C is given by ___________

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Q. What is the value of BOD of industrial sewage in kg/day, given population equivalent as 6000 persons?

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Q. Calculate the percentage of relative stability, given 5 day incubation period at 37°C.

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Q. _____ is the amount of oxygen required to oxidize both organic and inorganic matter in sewage.

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Q. COD is abbreviated as ___________

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Q. The oxidizing agent used in COD test is ___________

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Q. 5 days BOD at 20°C is ___ of total demand.

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Q. Which of the following expression is correct regarding deoxygenation constant where symbols have their usual meaning?

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Q. Which of the following is a prime lake pollutant?

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Q. The turbulence decreases the DO content of water.

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