Permanent hardness of water may be removed by addition of

1.	Permanent hardness of water may be removed by addition of
Answer» <html><body><p> <a href="https://interviewquestions.tuteehub.com/tag/sodium-1215510" style="font-weight:bold;" target="_blank" title="Click to know more about SODIUM">SODIUM</a> carbonate</p><br/><br/><p>Hardness can be <a href="https://interviewquestions.tuteehub.com/tag/removed-2986295" style="font-weight:bold;" target="_blank" title="Click to know more about REMOVED">REMOVED</a> by <a href="https://interviewquestions.tuteehub.com/tag/adding-2399902" style="font-weight:bold;" target="_blank" title="Click to know more about ADDING">ADDING</a> sodium carbonate (washing soda) or by <a href="https://interviewquestions.tuteehub.com/tag/passing-1148520" style="font-weight:bold;" target="_blank" title="Click to know more about PASSING">PASSING</a> the water through an ion-exchange <a href="https://interviewquestions.tuteehub.com/tag/column-922494" style="font-weight:bold;" target="_blank" title="Click to know more about COLUMN">COLUMN</a>.</p></body></html>

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