Environmental Engineering The alum, when added as a coagulant in water Decreases pH value of water Increases pH value of water Does not affect pH value of water Does not require alkalinity in water for flocculation Decreases pH value of water Increases pH value of water Does not affect pH value of water Does not require alkalinity in water for flocculation ANSWER DOWNLOAD EXAMIANS APP
Environmental Engineering The polluted water is one which Is contaminated Consists of undesirable substances rendering it unfit for drinking and domestic use Is safe and suitable for drinking and domestic use Contains pathogenic bacteria Is contaminated Consists of undesirable substances rendering it unfit for drinking and domestic use Is safe and suitable for drinking and domestic use Contains pathogenic bacteria ANSWER DOWNLOAD EXAMIANS APP
Environmental Engineering Which of the following sewers is preferred for combined system of sewage? Egg shaped sewer Rectangular sewer None of these Circular sewer Egg shaped sewer Rectangular sewer None of these Circular sewer ANSWER DOWNLOAD EXAMIANS APP
Environmental Engineering The type of valve, which is provided on the suction pipe in a tube-well, is Pressure relief valve Air relief valve Sluice valve Reflux valve Pressure relief valve Air relief valve Sluice valve Reflux valve ANSWER DOWNLOAD EXAMIANS APP
Environmental Engineering The main disadvantage of cement concrete sewers is Difficulty in transportation due to heavy weight Less life Difficulty in construction Less strength Difficulty in transportation due to heavy weight Less life Difficulty in construction Less strength ANSWER DOWNLOAD EXAMIANS APP
Environmental Engineering Average rate of water consumption per head per day as per Indian Standard is 165 liters 100 liters 135 liters 200 liters 165 liters 100 liters 135 liters 200 liters ANSWER DOWNLOAD EXAMIANS APP
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