Q. Hazin's formula given by following equation is used for the settlement velocity of the particles of diameter

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Q. In a sludge digestion tank if the moisture content of sludge V1 litres is reduced from p1 % to p2 % the volume V2 is

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Q. Boussinesq's equation for ascertaining unit pressure at a depth H on sewers due to traffic loads, is

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Q. If γw is the unit weight of water, r the hydraulic mean depth of the sewer and S the bed slope of the sewer, then the tractive force exerted by flowing water, is

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Q. For drains up to 15 cumecs, the depth d and width B are related by

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Q. For having central angle α, the area of cross-section of sewers running partially full, is

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Q. The value of Chezy's constant is used in

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Q. The following formula used for determining flow velocities in sewers, is known as

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Q. The settling velocity of a spherical particle of diameter less than 0.1 mm as per Stock's law, is

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Q. The asbestos cement pipes are generally laid

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Q. Chlorination of water is done for the removal of

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Q. For evaporation and measurement of settlable solids, the apparatus used, is

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Q. In SI units the power of sound is represented in

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Q. A rain sanitary sewer is constructed to carry

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Q. If the over land flow from the critical point to the drain is 8 km and the difference in level is 12.4 m, the inlet time is

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Q. An inverted siphon is designed generally for

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Q. A rainfall may be classified as acidic if its pH value is less or equal to

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Q. When drainage to sewage ratio is 20, the peak dry weather flow is

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Q. For treating the sewage of a large city, you will recommend

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Q. Clogging of sewers, is caused due to

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