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  1. Home
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Miscellaneous·2018·Easy

Which of the following substances cause temporary hardness in water? 1. Mg(HCO₃)₂ 2. Ca(HCO₃)₂ 3. CaCl₂ 4. MgSO₄ Select the correct answer using the code given below.

Which of the following substances cause temporary hardness in water?

1. Mg(HCO₃)₂

2. Ca(HCO₃)₂

3. CaCl₂

4. MgSO₄

Select the correct answer using the code given below.

Options

  1. a.

    3 and 4

  2. b.

    2 and 3

  3. c.

    1 and 4

  4. d.

    1 and 2

    Correct answer

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