1.

100 ml of a sample of water requires 0.98mg of K_(2)(M.W.= 294 )in presence of the H_(2)SO_(4) for the oxidation of dissolved organic matter in it. The COD of the water sample is

Answer»

78.4 PPM
1.6 ppm
3.2 ppm
6.4 ppm

Answer :B


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