maximum and minimum flow average flow only minimum flow only maximum flow only
Answer Discuss in Comment
presence of water presence of oxygen only presence as well as in absence of oxygen absence of oxygen only
maximum flow only maximum and minimum flow average flow only minimum flow only
antisiphonage pipe waste pipe vent pipe soil pipe
saprophytic anaerobic parasitic pathogenic
alkalinization oxidation reduction dehydration
slotted pipe tubewell cavity type tubewell strainer type tubewell none of above
ozone and carbon monoxide sulphur dioxide and ozone sulphur dioxide and nitrogen oxides nitrogen oxide and ozone
heart attack cases skin cancer cases asthma cases none of above
nitrates fluorides lead chlorides
"Scientists dream about doing great things. Engineers do them."
