MCQOPTIONS
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| 1. |
Alum helps in purifying water by [AIEEE 2002] |
| A. | Forming Si complex with clay particles |
| B. | Sulphate part which combines with the dirt and removes it |
| C. | Aluminium which coagulates the mud particles |
| D. | Making mud water soluble |
| Answer» D. Making mud water soluble | |