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Standard XII
Chemistry
Question

Hard water can be softened in ?
  1. A chromatograph
  2. An ion exchanger
  3. A calorimeter
  4. An earthenware pot

A
An earthenware pot
B
An ion exchanger
C
A calorimeter
D
A chromatograph
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Solution
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Answer:- (B) An ion exchanger
Explanation:-
In ion exchanger, the hard water is softened because it no longer contains calcium or magnesium ions. Ion exchange units that replaces calcium and magnesium ions from water are known as water softeners.

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