Civil Engineering - Waste Water Engineering - Discussion

Discussion Forum : Waste Water Engineering - Section 5 (Q.No. 8)
8.
To test chemical oxygen demand (C.O.D.) of sewage, organic matter is oxidised by pottassium dichromate in the presence of
Hydrochloric acid
Sulphuric acid
Nitric acid
Citric acid.
Answer: Option
Explanation:
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