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| Q. |
Pick up the incorrect statement from the following: |
| A. | Iron salts produce heavy flocks and hence remove more suspended matter |
| B. | Iron salts remove hydrogen sulphides |
| C. | Iron salts can be used over a limited range of pH values |
| D. | Iron salts impart corrosiveness to water |
| Answer» C. Iron salts can be used over a limited range of pH values | |
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