Q. Detention time for plain sedimentation tank usually ranges from

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Q. 135 litres of water per person per day, is provided in

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Q. If P is population of a city in thousands and Q is fire demand in litres per minute, for proper estimate of water, the Empirical formula Q = 1135(P/5 + 10) is suggested by

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Q. The gaseous form of chlorine gets converted into liquid form when subjected to a pressure of

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Q. The pH value of water fit for drinking, is

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Q. Disappearance of pink colour of water of a well due of KMnO₄ indicates that water contains

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Q. Shales are

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Q. Water is distributed to consumers by gravitational system, in

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Q. Grade aqueducts are not allowed to run

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Q. The type of joint generally used in cast iron pipes, is

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Q. Pick up the incorrect statement from the following. The source of surface water is from

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Q. For the prediction of future population of a city, the factor to be considered, is

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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. Water may not contain much impurities if its source is

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Q. Manholes are less common in

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Q. Pick up the correct statement from the following :

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Q. While designing a water supply of an industrial township, industrial and commercial water demand of total supply, is assumed

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Q. The storage capacity of a reservoir may be divided into three zones. The lowest zone is

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Q. In a rapid gravity filter

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