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| Q. |
Which of the following statement is correct? |
| A. | The sub-surface sources are not affected by draught. |
| B. | Infiltration galleries are most suitable for increasing the surface source supply, in dry season. |
| C. | The rate at which water percolates into well under safe maximum critical depression head is called yield of well. |
| D. | all of the above |
| Answer» D. all of the above | |
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