Multiple Choice Questions on Detergents produce lather with hard water because........ for UPSC Civil Services Examination (General Studies) Preparation

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    Detergents produce lather with hard water because

    they are soluble in hard water

    Incorrect Answer

    they are colourless substances

    Incorrect Answer

    the calcium and magnesium salts of sulphonic acids are soluble in water

    Correct Answer

    they form sodium carbonate with hard water

    Incorrect Answer
    Explanation:

    Detergents produce lather with hard water because the calcium and magnesium salts of sulphonic acids are soluble in water.


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