# Which of the following can be removed by ion exchange method

$\begin{array}{1 1}(a)\;Chlorine\;ions\\(b)\;Sulphur\;ions\\(c)\;Flurine\;ions\\(d)\;Pottasium\;ions\end{array}$

Solution :
Ion exchange describes a specific chemical process in which unwanted dissolved ions are exchanged for other ions with a similar charge.
Flurine ions.
Hence (c) is the correct answer.
edited Oct 4 by meena.p