For the COD test of sewage, organic matter is oxidised by K2Cr2O7 in the presence of________________?
Found an error? Read our corrections policy and submit a sourced correction below. You can also share a useful explanation in your own words.
A. HCl
C. HNO3
D. None of these
Found an error? Read our corrections policy and submit a sourced correction below. You can also share a useful explanation in your own words.