MCQOPTIONS
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| 1. |
The amount of chemical coagulant added for treatment of polluted water __________ with increase in temperature of the polluted water to be treated. |
| A. | decreases. |
| B. | increases. |
| C. | remains constant. |
| D. | may increase or decrease ; depends on the chemical characteristics of polluted water. |
| Answer» B. increases. | |