Question

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Hardness of water is due to the pair of ions.
(जल की कठोरता किस आयन युग्म के कारण
होते 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)​

Answer 1

Option A is correct.....

Hope it helps...

Plz mark as brainliest......

Answer 2

heya!!
_;___________★_★

→ Correct answer is option (c)

★ Hardness of water is due to Ca+2/Mg+2

★Ca/Mg( HCO3- ) → temporary hardness i.e easily removable

★ whereas, Ca/Mg (SO4-2, Cl-) → permanent hardness ... can be removed by special methods.

Hope it helps!!

#Phoenix