MCQOPTIONS
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| 1. |
The measured pH values of incoming and outgoing water at a water treatment plant are 7·3 and 8·5 respectively. What is the average pH of water, assuming a linear variation of pH with time? |
| A. | 6·55 |
| B. | 7·57 |
| C. | 8·12 |
| D. | 9·23 |
| Answer» C. 8·12 | |