Waste Water Engineering If the flame of a miner’s safety lamp in a manhole extinguishes within 5 minutes, the sewer certainly contains Oxygen Methane Hydrogen sulphide Carbon dioxide Oxygen Methane Hydrogen sulphide Carbon dioxide ANSWER DOWNLOAD EXAMIANS APP
Waste Water Engineering The underground sewers are more subjected to Bending force Compressive force Shearing force Tensile force Bending force Compressive force Shearing force Tensile force ANSWER DOWNLOAD EXAMIANS APP
Waste Water Engineering Primary treatment of sewage consists of removal of Floating materials Oil and grease Large suspended organic solids Sand and girt Floating materials Oil and grease Large suspended organic solids Sand and girt ANSWER DOWNLOAD EXAMIANS APP
Waste Water Engineering In sewers the velocity of flow should not be Less than 10 m/sec More than the self-cleansing velocity More than 20 m/sec Less than the self-cleansing velocity Less than 10 m/sec More than the self-cleansing velocity More than 20 m/sec Less than the self-cleansing velocity ANSWER DOWNLOAD EXAMIANS APP
Waste Water Engineering The detention time of a circular tank of diameter d and water depth H, for receiving the sewage Q per hour, is d (0.785d + 0.011H)/Q d (0.022d + 0.085H)/Q d (0.285d + 0.011H)/Q d² (0.011d + 0.785H)/Q d (0.785d + 0.011H)/Q d (0.022d + 0.085H)/Q d (0.285d + 0.011H)/Q d² (0.011d + 0.785H)/Q ANSWER DOWNLOAD EXAMIANS APP
Waste Water Engineering For the COD test of sewage, organic matter is oxidised by K₂Cr₂O₇ in the presence of HCl H₂SO₄ None of these HNO₃ HCl H₂SO₄ None of these HNO₃ ANSWER DOWNLOAD EXAMIANS APP
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