SSC SSC JE Civil 2025 Mock Test Series (Paper 1 & Paper 2) Environmental Engineering Quality of Water
In Versenate method (Hardness test) the water is titrated against EDTA salt solution using Eriochrome Black T as indicator solution. Here at the end of titration, the color changes from
1
Wine red to blue
2
Blue to sea green
3
Yellow to blue
4
Blue to yellow