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| Q. |
The pH value of sea water is usually |
| A. | Between 3 and 5 |
| B. | 1 |
| C. | Between 8 and 8.3 |
| D. | Between 13.7 and 14 |
| E. | Between 5 and 7 |
| Answer» C. Between 8 and 8.3 | |
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