EXAMIANS
For the prediction of future population of a city, the factor to be considered, is
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The process of passing water through beds of granular materials, is called
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The R.L. of ground water table on the sides of a valley is 1505 m whereas R.L. of the stream water is 1475 m. If 60° slope consists of pervious soil between R.L. 1485 m to 1500 m, the gravity spring may be expected at the point of reduced level
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Mathamoglobinemia or blue baby disease is caused due to
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The expected discharge to be obtained from an open well sunk in coarse sand is 0.0059 cumec. If the working depression head of the well is 3 m, the minimum diameter of the well, is
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In slow sland filters, the turbidity of raw water can be removed only up to
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Biochemical Oxygen Demand (B.O.D.) of safe drinking water must be
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Surcharge storage zone of a reservoir, is
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If four fires break out in a city of population 40 lakhs and if each hydrant has three streams and duration of each fire is four hours, the total quantity of water required, is
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The specific retention is least in case of
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