Four samples of water A, B, C and D have the `DO` values 1 mg / litre, 3 mg /litre, 5 mg / litre and 8 mg/litre respectively. The more polluted sample of water is

Three samples of water A,B and C have the D.O. values 1mg/l , 3mg/l , and 5 mg/l respectively . The more polluted sample of water is

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 The BOD values of three water sample x,y and z are 5 mg/litre, 16 mg/Litre and 400 mg/Litre respectively the more polluted sample of water is

Four samples of water A. B, C and D have the D.O. levels of 4 ppm. 3.8 ppm, 2.1 ppm and 4.9 ppm respectively 1he most polluted sample of water is

BOD values of 4 water samples A, B, C, D are 60, 80, 100 and 150 mg/lit respectively. Which is more polluted

Three water samples namely river water, untreated sewage water and secondary effluent discharged from a sewage treatement plant were subjected to BOD test. The samples were labelled A, B and C. but the laboratory attendant did not note which was which. The BOD values of the three samples A, B and C were recorded as 20 mg/L, 8 mg/L and 400 mg/L, respectively. Which sample of the water is most polluted? Can you assign the correct to each assuming the river water is relatively clean ?

Three water samples namely river water, untreated sewage water and secondary effluent discharge from a sewage treatment plant were subjected to BOD test. The samples were labelled A,B and C. but the laboratory attened did not note, which was which . The BOD values of the three samples A,B and C were recorded as 20 mg/L , 8 mg/L and 400 mg/L, respectively. which sample of the water is most polluted ? can you assign the correct label to each , assuming the river water is relatively clean

Three water samples namely river water, untreated sewage water and secondary effluent discharged from a sewage treatment plant were subjected to BOD test. The samples were labelled A, B and C, but the laboratory attendant did not note which was which. The BOD values of the three samples A, B and C were recorded as 20mg/L, 8mg/L and 400mg/L, respectively. Which sample of the water is most polluted? Can you assign the correct label to each assuming the river water is relatively clean?