Temporary hardness of water is due to the presence of:

  • A
    $CaCl_2, MgSO_4$
  • B
    $Ca^{+2}, Mg^{+2}$
  • C
    $K^{+}, CaCO_3$
  • D
    $Ca(HCO_3)_2, Mg(HCO_3)_2$

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