By which reaction formation of hard water takes place : (a) Ca(CH)_(2 – InterviewSolution

1.	By which reaction formation of hard water takes place : (a) Ca(CH)_(2)+2HCl (b) NaOH+HCl (c) KOH+HCl (d) NaOH+H_(2)CO_(3)
Answer» By only d By only a By a, B, C By all process Solution :Hardness of WATER ARISES due to presence of `CaCl_(2),CaSO_(4),MgCl_(2),MgSO_(4),CA(HCO_(3))_(2)Mg(HCO_(3))_(2)" only "Ca(OH)_(2)+2HClrarr CaCl_(2)+H_(2)O`

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