We know that lime required for softening of water is x{temp Ca hardnes – McqOptions

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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

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