Waste Water Engineering The suitable cross-section of sewers to carry combined flow, is Rectangular Circular Horse shoe shaped Egg shaped Rectangular Circular Horse shoe shaped Egg shaped ANSWER DOWNLOAD EXAMIANS APP
Waste Water Engineering For the COD test of sewage, organic matter is oxidised by K₂Cr₂O₇ in the presence of None of these HNO₃ HCl H₂SO₄ None of these HNO₃ HCl H₂SO₄ ANSWER DOWNLOAD EXAMIANS APP
Waste Water Engineering The reduced levels of the string at the consecutive sight rails A and B are 203.575 m, 203.475 m respectively. If the difference of their R.D.s is 10 m, the gradient of the sewer line is 1 in 100 upward 1 in 100 downward 1 in 500 upward 1 in 503 upward 1 in 100 upward 1 in 100 downward 1 in 500 upward 1 in 503 upward ANSWER DOWNLOAD EXAMIANS APP
Waste Water Engineering With self cleansing velocity in sewers Both silting and scouring occur at bottom Neither silting nor scouring occurs at bottom Silting occurs at bottom Scouring occurs at bottom Both silting and scouring occur at bottom Neither silting nor scouring occurs at bottom Silting occurs at bottom Scouring occurs at bottom ANSWER DOWNLOAD EXAMIANS APP
Waste Water Engineering The grit chambers of sewage treatment plants, are generally cleaned after 7 days 2 days 12 days 14 days 7 days 2 days 12 days 14 days ANSWER DOWNLOAD EXAMIANS APP
Waste Water Engineering 5 days-biochemical oxygen demand (BOD5) is taken at a temperature of 25°C 15°C 20°C 0°C 25°C 15°C 20°C 0°C ANSWER DOWNLOAD EXAMIANS APP
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