Environmental Engineering The dissolved oxygen level in natural unpolluted waters at normal temperature is found to be of the order of 100 mg/liter 10 mg/liter 1000 mg/liter 1 mg/liter 100 mg/liter 10 mg/liter 1000 mg/liter 1 mg/liter ANSWER DOWNLOAD EXAMIANS APP
Environmental Engineering Double filtration is used All of these To increase the filtration rapid sand filters capacity of To increase the filtration slow sand filters capacity of For isolated buildings like pools, hotels etc swimming All of these To increase the filtration rapid sand filters capacity of To increase the filtration slow sand filters capacity of For isolated buildings like pools, hotels etc swimming ANSWER DOWNLOAD EXAMIANS APP
Environmental Engineering The layout of distribution system in which water flows towards the outer periphery is Ring system Radial system Grid iron system Dead end system Ring system Radial system Grid iron system Dead end system ANSWER DOWNLOAD EXAMIANS APP
Environmental Engineering Activated carbon is used for Disinfection Removing corrosiveness Removing odours Removing hardness Disinfection Removing corrosiveness Removing odours Removing hardness ANSWER DOWNLOAD EXAMIANS APP
Environmental Engineering The maximum permissible limit for fluoride in drinking water is 10 mg/liter 0.1 mg/liter 5 mg/liter 1.5 mg/liter 10 mg/liter 0.1 mg/liter 5 mg/liter 1.5 mg/liter ANSWER DOWNLOAD EXAMIANS APP
Environmental Engineering The hydraulic mean depth (HMD) for an egg-shaped sewer flowing two-third full is Equal to HMD when flowing full Less than HMD when flowing full None of these Greater than HMD when flowing full Equal to HMD when flowing full Less than HMD when flowing full None of these Greater than HMD when flowing full ANSWER DOWNLOAD EXAMIANS APP
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