Answers

2016-02-20T15:41:03+05:30
No
Water Cannot be detected That its Hard Or Soft As Detergent Brings Same Conclusion when it is added to soft water and hard water.By soap it can be detected as Soap does no lather in hard water 
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2016-02-20T17:35:25+05:30
we would not able to check whether sample of water is hard by using a detergent this is because detergents forms lather easily even with hard water.
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