Q. Which of the following substances cause temporary hardness in water?1. Mg(HCO3)22. Ca(HCO3)23. CaCl24. MgSO4
A) 2and 3
B) 3 and 4
C) 1 and 2
D) 1 and 4
✔ Correct Answer: 1 and 2
Exam Insight
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A) 2and 3
B) 3 and 4
C) 1 and 2
D) 1 and 4
✔ Correct Answer: 1 and 2
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