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Question
Match the following.
| Universal solvent | Water pollutant |
| Hard water | Kills germs |
| Boiling | Ozonisation |
| Sterilization | Water |
| Sewage | Stomach ailments |
Match the Columns
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Solution
| Universal solvent |
Water |
| Hard water | Water pollutant |
| Boiling | Stomach ailments |
| Sterilization | Ozonisation |
| Sewage | Kills germs |
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Classification of water: Soft and Hard Water
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