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Hard and Soft Water; Making Water Potable
Chemistry (Science Paper 2) · Chapter 6 · 3. Water
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- Soft and hard water in terms of the action of soap; advantages and disadvantages of each
- Temporary and permanent hardness: types and causes
- Removal of hardness by boiling and by adding washing soda
- Making water potable: filtration, chlorination, defluoridation and the role of alum
- Diseases caused by polluted water