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Which of the following salts is responsi...

Which of the following salts is responsible for temporary and permanent hardness of water, respectively?

A

`Mg(HCO_(3))_(2)andNa_(2)SO_(4)`

B

`Ca(HCO_(3))_(2)andMgCl_(2)`

C

`MgSO_(4)andMg(HCO_(3))_(2)`

D

`CaCl_(2)andCaSO_(4)`

Text Solution

Verified by Experts

The correct Answer is:
B

Bicarbonates of calcium and magnesium and chlorides and sulphates of calcium and magnesium are responsible for temporary and permanent hardness, respectively.
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Knowledge Check

  • Which of the following is responsible for the permanent hardness of water?

    A
    Calcium bicarbonate
    B
    Sodium chloride
    C
    Magnesium bicarbonate
    D
    Calcium sulphate
  • Which of the following ions are responsible for hardness of water?

    A
    Sodium and Magnesium ions
    B
    Sodium and Calcium ions
    C
    Potassium and Calcium ions
    D
    Calcium and Magnesium ions
  • Which of the following ions are responsible for hardness of water?

    A
    Sodium and Magnesium ions
    B
    Sodium and Calcium ions
    C
    Potassium and Calcium ions
    D
    Calcium and Magnesium ions
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