Q. 355.0( 2 Votes )

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Answer :

No, we can’t test the hard water using detergent because detergent can form lather in both hard as well as soft water.


The other method to test the hardness of hard water is by boiling the soft water. On boiling the water, the insoluble salt’s precipitates will settle down and these can be removed by filtration. The water left will be hard water.


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