Environmental Engineering Disinfection of water results in Killing of disease bacteria Removal of hardness Removal of turbidity Complete sterilisation Killing of disease bacteria Removal of hardness Removal of turbidity Complete sterilisation ANSWER DOWNLOAD EXAMIANS APP
Environmental Engineering As compared to rapid sand filters, slow sand filters give (i) Slower filtration rate (ii) Higher filtration rate (iii) Lesser efficiency in removal of bacteria (iv) Higher efficiency in removal of bacteria The correct answer is (i) and (iv) (i) and (ii) (ii) and (iii) (ii) and (iv) (i) and (iv) (i) and (ii) (ii) and (iii) (ii) and (iv) ANSWER DOWNLOAD EXAMIANS APP
Environmental Engineering The detention period for oxidation ponds is usually kept as 10 to 15 days 3 months 24 hours 48 hours 10 to 15 days 3 months 24 hours 48 hours ANSWER DOWNLOAD EXAMIANS APP
Environmental Engineering The type of valve, which is provided on the suction pipe in a tube-well, is Sluice valve Reflux valve Air relief valve Pressure relief valve Sluice valve Reflux valve Air relief valve Pressure relief valve ANSWER DOWNLOAD EXAMIANS APP
Environmental Engineering The amount of residual chlorine left in public water supply for safety against pathogenic bacteria is about 0.5 to 1.0 ppm 0.05 to 0.5 ppm 1.0 to 5.0 ppm 0.01 to 0.05 ppm 0.5 to 1.0 ppm 0.05 to 0.5 ppm 1.0 to 5.0 ppm 0.01 to 0.05 ppm ANSWER DOWNLOAD EXAMIANS APP
Environmental Engineering Which of the following compounds is widely used for algae control? Copper sulphate Sodium sulphate Calcium chloride Sodium chloride Copper sulphate Sodium sulphate Calcium chloride Sodium chloride ANSWER DOWNLOAD EXAMIANS APP
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