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Q.1) Chlorine demand of water is equal to _____. A) residual chlorine B) applied chlorine C) applied + residual chlorine D) Applied – residual chlorine Answer Option (D) Explanation : Nil. Q.2) The water which is not chemically pure but does not contain anything harmful to human health is called – A) Wholesome water B)…
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Q.1) Standard EDTA (ethylene diamine tetra acetic acid) solution is used to determine : A) Hardness in water B) Turbidity in water C) Dissolved oxygen in water D) Residual chlorine in water Answer Option (A) Q.2) Turbidity is measured on – A) Standard silica scale B) Standard cobalt scale C) Standard platinum scale D) Platinum…
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Q.1) Pollution potential of domestic sewage generated in a town and its industrial sewage can be compared with reference to : A) Their BOD value B) Population equivalent C) Their volume D) The relative density Answer Option (B) Q.2) For which of the following, distribution mains is designed? A) Average daily demand B) Annual peak…
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Q.1) The water obtained from…….is generally known as sub-surface water. A) Rains B) Rivers C) Reservoirs D) Artesian wells Answer Option (D) Q.2) The portion of soil through which lateral movement of water takes place is called – A) Water table B) An aquiclude C) Zone of saturation D) An aquifuge Answer Option (C) Q.3)…
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Q.1) The removal of dissolved organic matter occurs in – A) Slow sand filters B) Trickling filters C) Rapid sand filters D) Dual media filters Answer Option (A) Q.2) A Galvanised Iron (G.I.) pipe has a coating of – A) Zinc B) Lead C) Silver D) Aluminium Answer Option (A) Q.3) The presence of ozone…
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Q.1) The vertical wells provided along the banks of a river to draw ground water in dry season are called : A) Open wells B) Tube wells C) Artesian wells D) Infiltration wells Answer Option (D) Q.2) The yield of the well depends upon the – A) Permeability of the soil B) Position of water…
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