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Polyphosphates are used as water softening agents because they

$\begin{array}{1 1}(a)\;\text{Form soluble complexes with anionic species}\\(b)\;\text{Precipitate anionic species}\\(c)\;\text{Form soluble complexes with cationic species}\\(d)\;\text{Precipitate cationic species}\end{array}$

1 Answer

Form soluble complexes with cationic species
Hence (c) is the correct answer.
answered Jan 24, 2014 by sreemathi.v