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Questions and Answers
The molecular weight of C6H12O6 is 192 g/mol
False
Chemical Oxygen Demand (COD) measures the biodegradability of organic matter
False
Potassium dichromate (K2Cr2O7) is used as an oxygen source to oxidize the inorganic carbon present in the sample
False
The COD of a waste is measured in terms of the amount of oxygen consumed by the sample
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The sample is titrated with Ferrous Ammonium Sulphate(FAS) by using methylene blue indicator
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The COD value is always lower than BOD's
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The COD is expressed in terms of the amount of oxygen consumed in ml/L
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The molarity of FAS is used to calculate the COD in terms of mg/L as O2
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The COD test is performed at 200°C for 3 hours
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The milli equivalent weight of oxygen is 16
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