MCQOPTIONS
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MCQOPTIONS
| 1. |
The temporary hardness in water is due to ____________ |
| A. | OH<sup> </sup> |
| B. | CO<sub>3</sub><sup>2-</sup> |
| C. | H<sup>+</sup> |
| D. | HCO<sub>3</sub><sup> </sup> |
| Answer» E. | |