Environmental Engineering The velocity of flow of water in a sedimentation tank is about 5 to 10 cm/sec 15 to 30 cm/hour 15 to 30 cm/minute 15 to 30 cm/sec 5 to 10 cm/sec 15 to 30 cm/hour 15 to 30 cm/minute 15 to 30 cm/sec ANSWER DOWNLOAD EXAMIANS APP
Environmental Engineering If the coli form bacteria is present in a sample of water, then the coli-form test to be conducted is (i) Presumptive coli-form test (ii) Confirmed coli-form test (iii) Completed coli-form test All (i), (ii) and (iii) Both (i) and (ii) Only (i) Both (i) and (iii) All (i), (ii) and (iii) Both (i) and (ii) Only (i) Both (i) and (iii) ANSWER DOWNLOAD EXAMIANS APP
Environmental Engineering The settling velocity of a particle in a sedimentation tank increases if Particle size is decreased The surface area of tank is increased The depth of tank is decreased None of these Particle size is decreased The surface area of tank is increased The depth of tank is decreased None of these ANSWER DOWNLOAD EXAMIANS APP
Environmental Engineering Which of the following compounds is widely used for algae control? Sodium sulphate Copper sulphate Calcium chloride Sodium chloride Sodium sulphate Copper sulphate Calcium chloride Sodium chloride ANSWER DOWNLOAD EXAMIANS APP
Environmental Engineering The characteristics of fresh and septic sewage respectively are Acidic and alkaline Both acidic Both alkaline Alkaline and acidic Acidic and alkaline Both acidic Both alkaline Alkaline and acidic ANSWER DOWNLOAD EXAMIANS APP
Environmental Engineering The phenolic compounds in public water supply should not be more than 0.0001 ppm 0.01 ppm 0.1 ppm 0.001 ppm 0.0001 ppm 0.01 ppm 0.1 ppm 0.001 ppm ANSWER DOWNLOAD EXAMIANS APP
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