Browse Questions

# Permanent hardness of water cannot be completely removed by

$\begin{array}{1 1}(a)\;\text{Washing soda}\\(b)\;\text{Permutit method}\\(c)\;\text{Ion exchange method}\\(d)\;\text{Boiling}\end{array}$

Can you answer this question?

By only boiling temporary hardness cannot be removed.
Hence (d) is the correct answer.
answered Jan 23, 2014