Q. The following is the physical characteristic of sewage

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Q. Acid regression stage of sludge digestion at a temperature 21°C extends over a period of

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Q. If the pH value of sewage is 7

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Q. Pick up the correct statement from the following :

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Q. Pick up the incorrect statement from the following :

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Q. Pick up the correct statement from the following :

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Q. Pick up the correct statement from the following :

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Q. Cement concrete sewers are only suitable if non-scouring velocity is between

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Q. The grit chambers of sewage treatment plants, are generally cleaned after

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Q. The spacing of bars for perforations in coarse screens used for the treatment of sewage, is

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Q. In very first stage of decomposition of the organic matter in sewage

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Q. The underground sewers are more subjected to

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Q. Pick up the correct statement from the following :

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Q. The sewer pipes

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Q. The normal values of over flow rates for secondary sedimentation tanks, ranges between

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Q. The Brake Horse power of the motor (efficiency 60%) required for a pump of capacity 0.075 cumec for a total lift of 12 m, is

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Q. The normal value of over flow rates for plain primary sedimentation tanks, ranges between

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Q. The asbestos cement sewers are

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Q. Bottom openings 15 cm x 15 cm in the standing baffle wall are provided

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Q. Faculative bacterias survive in

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