Environmental Engineering Alum as a coagulant is found to be most effective when pH range of water is 6 to 8 8 to 10 4 to 6 2 to 4 6 to 8 8 to 10 4 to 6 2 to 4 ANSWER DOWNLOAD EXAMIANS APP
Environmental Engineering The ratio of 5 day BOD to ultimate BOD is about 43864 1 43833 43894 43864 1 43833 43894 ANSWER DOWNLOAD EXAMIANS APP
Environmental Engineering As compared to higher pH values, the contact period required for efficient chlorination at lower pH values is None of these Larger Smaller Same None of these Larger Smaller Same ANSWER DOWNLOAD EXAMIANS APP
Environmental Engineering A sewer that receives the discharge of a number of house sewers is called Sub-main sewer Lateral sewer House sewer Intercepting sewer Sub-main sewer Lateral sewer House sewer Intercepting sewer ANSWER DOWNLOAD EXAMIANS APP
Environmental Engineering The maximum efficiency of BOD removal is achieved in Aerated lagoons Oxidation ditch Oxidation pond Trickling filters Aerated lagoons Oxidation ditch Oxidation pond Trickling filters ANSWER DOWNLOAD EXAMIANS APP
Environmental Engineering The maximum discharge of a tube well is about 500 liters/sec 5 liters/sec 50 liters/sec 1000 liters/sec 500 liters/sec 5 liters/sec 50 liters/sec 1000 liters/sec ANSWER DOWNLOAD EXAMIANS APP
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