What is B.O.D.? (1) The amount of \( \mathrm{O}_{2} \) utilised by ...
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0What is B.O.D.?
(1) The amount of \( \mathrm{O}_{2} \) utilised by organisms in
PV water
(2) The amount of \( \mathrm{O}_{2} \) utilized by microorganisms for decomposition
(3) The total amount of \( \mathrm{O}_{2} \) present in water
(4) All of these
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