Practice Test | Kullabs.com
0%
  • How many types of water are there?

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

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

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

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

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

    Calcium silicate and magnesium bicarbonate
    Calcium chloride and magnesium chloride
    Calcium phosphate and magnesium phosphate
    Calcium bicarbonate and magnesium bicarbonate.
  • 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
    Hepatitis
    Typhoid
    Scabies
  • If pH value of water is

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

    Used in beer industries.
    It helps in the development of bones and teeth as it contains calcium salt.
    Unfit for drinking
    Water becomes tasty to dissolved salts of calcium and magnesium.
  • You scored /10


    Take test again