Q. Which of the following represents the oxygen sag curve in the following figure?

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Q. The oxygen deficit is maximum when?

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Q. When the BOD of wastewater increases, then?

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Q. Rate of aeration is independent of the D.O content of wastewater.

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Q. Which of the following represents the physical characteristics of water?

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Q. Which of the following is measured in mg/L?

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Q. Which of the following instrument is used to measure turbidity?

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Q. When the sewage becomes stronger, the turbidity of wastewater?

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Q. Which color indicates the fresh sewage?

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Q. The color of the septic sewage is __________

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Q. The odor in wastewater is measured by __________

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Q. In India, the average temperature of sewage is __________

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Q. Identify the incorrect statement from the following?

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Q. _______ indicates the freshness of sewage.

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Q. ______ represents the number of dilutions required to reduce odor.

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Q. The odor quality of Amines is __________

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Q. The odor quality of compound is ammoniacal. Identify the type of compound from the following options.

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Q. The wastewater from the kitchen is an example of __________

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Q. The type of wastewater from the flushing operation of toilet is __________

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Q. The temperature of sewage increases. What will be the effect on the dissolved oxygen in sewage?

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