Q. The permissible amount of nitrites present in potable water, is

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Q. Water having pH value as 6, is

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Q. Alum is chemically

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Q. If w is the weight of water per cubic metre, Q is the discharge in cubic metres per sec and H is the total head, the required water horse power of the pump, is

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Q. Perched acquifers are generally found

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Q. In an artesian acquifer, the draw downs in two observation wells at distances 100 m, and 200 m were found same after one hour and x hours respectively. The value of x, is

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Q. Dissolved carbon dioxide, can be removed from the supply main by

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Q. Slow sand filter is used if maximum turbidity of raw water is less than

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Q. The external load per unit length of

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Q. The total domestic consumption in a city water supply, is assumed

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Q. Permanent hardness of water can be removed by

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Q. Demand for public uses in a city, does not include water required for

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Q. The chloride content of treated water for public supplies should not exceed

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Q. An aquiclude is

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Q. Pick up the incorrect statement from the following :

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Q. Normal values of overflow rate for sedimentation tanks using coagulants in litres/hr/m² , generally range between

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Q. In a rapid sand filter, air binding is caused due to excessive

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Q. If average volume of sediment deposits is one-tenth million cubic metres per year in a reservoir of total capacity 10 million cubic metres, the dead storage will be filled up, in

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Q. A circular gravity aqueduct is not generally preferred to because of

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Q. Standard unit of turbidity of water is in one litre of distilled water, one milligram of finely divided

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