In chemical Oxygen Demand test, the digested sample is titrated with standard Ferrous Ammonium Sulphate to determine the unreacted amount of

In chemical Oxygen Demand test, the digested sample is titrated with s

1.	In chemical Oxygen Demand test, the digested sample is titrated with standard Ferrous Ammonium Sulphate to determine the unreacted amount of
A.	Mercuric sulphate
B.	Postassium dichromate
C.	Silver sulphate
D.	Sulphuric acid
Answer» C. Silver sulphate

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In chemical Oxygen Demand test, the digested sample is titrated with standard Ferrous Ammonium Sulphate to determine the unreacted amount of

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