1.Both temporary and permanent hardness are removed on boiling water with:a.Ca(OH)2Ca(OH)_2Ca(OH)2b.Na2CO3Na_2CO_3Na2CO3 (washing soda)c.CaCO3CaCO_3CaCO3d.CaOCaOCaOLogin to continueOnly logged in users canattempt or see the solution.
