Q. Rapid gravity filter can only remove turbidity of water upto

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Q. Pick up the correct statement from the following :

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Q. The best process of disinfection of public water supply, is by

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Q. Pick up the correct statement from the following :

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Q. While determining the yield of open wells by the pumping test

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Q. Increase in population of a rapidly growing city, may be estimated by

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Q. Pick up the correct statement from the following regarding the pressure conduits :

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Q. The standard B.O.D. at 20°C, is taken for the consumption in

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Q. A water channel supported above the ground over trestles, is generally called

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Q. One degree of hardness of water means a content of salts of

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Q. Mostly used coagulant, is

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Q. Hard water for public water supply is discarded because

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Q. Pick up the correct statement from the following regarding radial flow centrifugal pumps :

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Q. Quality of water is said to be good if it is

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Q. Pick up the incorrect statement from the following :

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Q. The main draw-back of centrifugal pump, is

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Q. The bacterias which require free oxygen for their survival, are called

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Q. Maximum threshold number permitted for indicating the odour of public water supplies, is

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Q. 45 litres of water per person per day, is provided in

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Q. Turbidity of water may be caused due to

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