If BOD of sample water is very high, the sample is

If BOD of sample water is a very high,the sample is

BOD of a river water is found very high. This means water:

Biochemical Oxygen Demand (BOD) is a measure of organic materials present in water. If BOD value is less than 5ppm then water sample is to be

A sample of hard water is found to contain 50mg of CaSO_4 in 12kg of sample.Calculate the hardness of the sample in terms of ppm of CaSO_4 .

pH of a water sample is tested with

The amount of oxygen used by the suitable microorganisms present in water during five days at 20^(@)C is called as BOD. For pure water BOD is about 1 ppm fairly pure water 3 ppm and doubtful purity 5 ppm the municipal sewage has BOD values 100-4000 ppm. BOD= Number of moles of O_2 required / Number of liters of water sample If water is polluted its BOD value is

BOD values of different samples of water are given. Sample A BOD = 5, Sample B BOD = 12 , Sample C BOD = 2, Sample D BOD = 7 Which of the above - given sample will have the least number of Daphnia ?

BOD values of different samples of water are given. Sample A BOD = 5, Sample B BOD = 12 , Sample C BOD = 2, Sample D BOD = 7 Which of the above - given sample will have the least number of Daphnia ?