✔ Correct Answer: D. Ca(HCO3)2 and Mg(HCO3)2

The correct answer to the question “Which salts are excessively dissolved to make temporary hard water?” is Ca(HCO3)2 and Mg(HCO3)2. This question belongs to Everyday Science. Practice the related questions below to master this topic for your FPSC, PPSC and NTS tests.