Environmental Engineering The pathogens can be killed by Nitrification Chlorination Oxidation None of these Nitrification Chlorination Oxidation None of these ANSWER DOWNLOAD EXAMIANS APP
Environmental Engineering For the same solid content, if the quantity of sludge with moisture content of 98% is X, then the quantity of sludge with moisture content of 96% will be X/2 X/4 2X X X/2 X/4 2X X ANSWER DOWNLOAD EXAMIANS APP
Environmental Engineering The gas from sludge digestion tank is mainly composed of Nitrogen Methane Carbon dioxide Hydrogen sulphide Nitrogen Methane Carbon dioxide Hydrogen sulphide ANSWER DOWNLOAD EXAMIANS APP
Environmental Engineering The dissolved oxygen level in natural unpolluted waters at normal temperature is found to be of the order of 100 mg/liter 1 mg/liter 1000 mg/liter 10 mg/liter 100 mg/liter 1 mg/liter 1000 mg/liter 10 mg/liter ANSWER DOWNLOAD EXAMIANS APP
Environmental Engineering Sludge volume index is defined as the ratio of Percentage of sludge by volume to percentage of total solids by weight Percentage of sludge by volume to percentage of suspended solids by weight Percentage of suspended solids by weight to percentage of sludge by volume Percentage of total solids by weight to percentage of sludge by volume Percentage of sludge by volume to percentage of total solids by weight Percentage of sludge by volume to percentage of suspended solids by weight Percentage of suspended solids by weight to percentage of sludge by volume Percentage of total solids by weight to percentage of sludge by volume ANSWER DOWNLOAD EXAMIANS APP
Environmental Engineering Period of cleaning of slow sand filters is about 24 - 48 hours 2 - 3 months 1 - 2 year 10 - 12 days 24 - 48 hours 2 - 3 months 1 - 2 year 10 - 12 days ANSWER DOWNLOAD EXAMIANS APP
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