Q. The process of passing water through beds of granular materials, is called

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Q. Water to the consumers may be supplied from

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Q. Pickup the incorrect statement from the following :

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Q. Detention period of a settling tank is

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Q. Pick up the incorrect statement from the following :

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Q. The order of existence of three portions of water in a reservoir from the bottom to top is

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Q. The approximate diameter of a water mains for supplying 7.2 mld with a velocity 1.2 m/sec, is

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Q. The chlorine supply cylinders are generally kept at 38°C to 40°C to prevent

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Q. The capability of a soil mass of full width and depth to transmit water, is known

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Q. Well treated water is generally supplied for

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Q. Non-pathogenic bacterias cause the following water borne disease,

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Q. Steel pipe are

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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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