Practice Test | Kullabs.com
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  • How many types of water are there?

    4 types
    5 types
    3 types
    2 types
  • Which type of water cannot form lather with soap?

    Clean water
    Soft water
    Hard water
    Simple water
  • Which type of water can form lather with soap?

    Soft water
    Tight water
    Tough water
    Hard water
  • Which one of the following is not the method of removal of permanent hardness of water?

    Permutit process
    By heating
    By treating with washing soda
  • In which method of removal of permanent hardness of water, is sodium zeolite or sodium aluminium orthosilicate used?

    Permutit process
    Bessemer's process
    Dalton's process
    Hard removal process
  • Temporary hardness of water is due to

    Calcium bicarbonate and magnesium bicarbonate.
    Calcium silicate and magnesium bicarbonate
    Calcium chloride and magnesium chloride
    Calcium phosphate and magnesium phosphate
  • Permanent hardness is caused due to

    Magnesium bicarbonate
    Magnesium sulphate
    Magnesium carbonate
    All of the above
  • Which of the following is not a water borne disease?

    Cholera
    Scabies
    Hepatitis
    Typhoid
  • If pH value of water is

    all
    7 water is said to be neutral
    Less than 7 it is said to be acidic
    More than 7 it is said to be alkaline
  • Which one of the following is not the advantgae of hard water?

    It helps in the development of bones and teeth as it contains calcium salt.
    Unfit for drinking
    Used in beer industries.
    Water becomes tasty to dissolved salts of calcium and magnesium.
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