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| Q. |
Which of the following statement is correct? |
| A. | If the pH value of water is equal to 7, the water is said to be neutral. |
| B. | The pH value determines the strength of the acid or slkali in water. |
| C. | The pH value of water can be obtained by a potentiometer |
| D. | all of the above |
| Answer» D. all of the above | |
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