📢 Too many exams? Don’t know which one suits you best? Book Your Free Expert 👉 call Now!
  • google app store apple app store
    • ✖

      Question

      The two metal ions that cause hardness to water

      are……………?
      A Calcium and Magnesium Correct Answer Incorrect Answer
      B Sodium and Magnesium Correct Answer Incorrect Answer
      C Magnesium and Sulphur Correct Answer Incorrect Answer
      D Sodium and Chlorine Correct Answer Incorrect Answer

      Solution

      Hardness is defined as the concentrations of calcium and magnesium ions expressed in terms of calcium carbonate.The Hardness in water is caused by the presence of dissolved calcium (Ca 2+) and magnesium (Mg 2+) ions.

      Practice Next
      More Chemistry GS Questions
      ask-question