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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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