

MCQOPTIONS
Saved Bookmarks
1. |
We know that lime required for softening of water is x{temp Ca hardness+2.Mg hardness+perm(Mg+Fe+3Al)hardness+1/2 HCL+H2SO4-NaAlO2-CO2 }-all are in terms of mg of CaCO3. Here x=? |
A. | 7.4 |
B. | 0.74 |
C. | 74 |
D. | 740 |
Answer» C. 74 | |