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| Q. |
Which of the following statement is correct? |
| A. | Pre-chlorination reduces the bacterial load on filters. |
| B. | The substance used for disinfection of water is known as coagulant. |
| C. | Chlorine cannot be applied in the form of chloramines. |
| D. | all of the above |
| Answer» A. Pre-chlorination reduces the bacterial load on filters. | |
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