Water-and-waste-water Questions Set 23:
What is the maximum safe permissible limit of sulphates in domestic water supply?
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A groundwater sample was found to contain 500 mg/l total dissolved solids (TDS). TDS (in %) present in the sample is _________.
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What is the rate of change of velocity per unit distance normal to a section?
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Which type of water filter is most suitable for protected rural water supply?
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In the design of storm sewers, "time of concentration" is relevant to determine the
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For a given water sample, the ratio between BOD5day , 20oC and the ultimate BOD is 0.68. The value of the reaction constant k (on base e) (in day-1, up to 2 decimal places) is
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A particle has a size of 10 mm and a specific gravity of 2.65. What is the settling velocity of the particle according to Stokes' law?
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Which of the following statements about Anthracite is incorrect?
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Use of coagulants such as alum
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In circular basins with peripheral-feed, what forms the annular space into which inlet wastewater is discharged in a tangential direction?
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