Teaching HPSC Lecturer (Technical) Mock Test 2024 Environmental Engineering Quality and Characteristics of Sewage
In chemical Oxygen Demand test, the digested sample is titrated with standard Ferrous Ammonium Sulphate to determine the unreacted amount of
1
Mercuric sulphate
2
Postassium dichromate
3
Silver sulphate
4
Sulphuric acid
5
Question Not Attempted