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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Q. Pick up the correct statement from the following :

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Q. Specific yield of a well is

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

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Q. The coefficient of permeability of soils, is generally expressed in

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Q. Pick up the correct statement from the following :

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Q. Total flow in stream is known

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Q. Disinfection of drinking water is done to remove

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Q. The ratio of total capacity and dead storage is kept

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Q. Asbestos pipes are joined by means of

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Q. Abyssinian tube well is a special type of

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Q. Chlorination of water does not remove

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Q. The efficiency of a pumping set, is generally assumed

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Q. To remove very fine suspended particles from water, the method adopted is

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Q. Growth of population can be conveniently represented by

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Q. In a well planned city, the layout of distribution pipes generally adopted, is

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Q. Air valves are generally provided in pressure pipes of water supply

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Q. Pick up the correct statement from the following :

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Q. Bacterias which can survive with or without free oxygen, are known

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