।। ।।Hardness of water is due to the pair of ions.(जल की कठोरता किस आयन युग्म के कारणहोते हैं ?)(a) Ca" और K: (Ca' and K*)(b) Mg2+ 3ilt K(Mg2 and Kt)(c) Ca• और Mg (Ca' and Mg)(d) Ba°• और Zn (Ba' and Zn)
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Hey mate❤️❤️
Option C ia the right answer because hardness of water is due to the pair of ions Ca2+ and Mg2+
i hope it help you✌️✌️
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Answer:
the option c is the correct answer
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