Practice Test | Kullabs.com
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  • Temporary hardness of water is due to 

    Cacl2
    (Ca(HCO3)2)
    FeSO4
    FeSO4
  • The hardeness of water depends upon

    it's behaviour towards cloth
    it's behaviour towards soap
    it's behaviour towards skin
    it's behaviour towards acids
  • Which water can produce lather with soap easily?

    Soft water
    Heavy water
    Light water
    Hard water
  • Heavy water is

    D2O
    Water at 40
    H2O
    Distilled water
  • Which water is makes washing cloth easier?

    Soft water
    Hard water
    Light water
    Heavy water
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