Q. Water is supplied from the source to the treatment plant under gravity in

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Q. The most ideal disinfectant used for drinking water throughout the world, is

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Q. A centrifugal pump is required to be primed before starting if it is located

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Q. The maximum pressure which the pipe can withstand without any leakage during hydrostatic pressure test, is called

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Q. Filtration of water is done to remove

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Q. Generally, first portion of a logistic curve for the population growth of a developing city, represents the growth of

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Q. Pick up the incorrect statement from the following. In take of water supply should

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Q. Reciprocating pumps

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Q. The temporary hardness of water can be removed by

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Q. Rapid gravity filters

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Q. If n is porosity, y is specific yield and r is specific retention of any soil, the relationship which holds good, is

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Q. Alum is a

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Q. In a reservoir the average volume of sediment deposition is 0.15 million cubic per year. If the dead storage and total capacity of the reservoir are 8 million cubic metres and 36 million cubic metres respectively,

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Q. The requirement of water per capita per day, is

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Q. Water losses in water supply, is assumed as

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Q. The pH value of water is kept slightly less than 7 so that hydrochloride ions may combine with ammonia ions to form

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Q. 'Shrouding' is essentially provided in

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Q. The ensure proper growth of children's teeth, the quantity of flouride used in water mains, is

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Q. Chemical coagulation of drinking water, is done

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Q. The U.C. (uniformity coefficient) D₆₀/D₁₀ for the best filter media sand should be

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