JEE Main Chemistry question

Not in JEE Main or NEET syllabus

Deionised water is obtained by passing hard water through

(A)Anion exchanger
(B)Zeolite
(C)Cation exchanger
(D)Both anion and cation exchangerCorrect

Answer: (D)

Solution

A cation exchanger alone removes cations (replacing Ca, Mg, Na, etc. with H), while an anion exchanger alone removes anions (replacing Cl, SO, HCO, etc. with OH); used individually, neither produces fully ion-free

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Question ID VK-137266