Environmental Engineering The percentage of chlorine in fresh bleaching powder is about 20 to 25 40 to 50 10 to 15 30 to 35 20 to 25 40 to 50 10 to 15 30 to 35 ANSWER DOWNLOAD EXAMIANS APP
Environmental Engineering Composting and lagooning are the methods of Sludge digestion Filtration Sludge disposal Sedimentation Sludge digestion Filtration Sludge disposal Sedimentation ANSWER DOWNLOAD EXAMIANS APP
Environmental Engineering The water carriage system of collection of waste product Requires treatment before disposal Is cheaper in initial cost than dry conservancy system Creates hygienic problem All of these Requires treatment before disposal Is cheaper in initial cost than dry conservancy system Creates hygienic problem All of these 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 10 mg/liter 1 mg/liter 1000 mg/liter 100 mg/liter 10 mg/liter 1 mg/liter 1000 mg/liter 100 mg/liter ANSWER DOWNLOAD EXAMIANS APP
Environmental Engineering The most common cause of acidity in water is Oxygen Carbon dioxide Nitrogen Hydrogen Oxygen Carbon dioxide Nitrogen Hydrogen ANSWER DOWNLOAD EXAMIANS APP
Environmental Engineering Period of cleaning of slow sand filters is about 24 - 48 hours 10 - 12 days 1 - 2 year 2 - 3 months 24 - 48 hours 10 - 12 days 1 - 2 year 2 - 3 months ANSWER DOWNLOAD EXAMIANS APP
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