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प्रश्न
Give a reason for the following.
Hard water is not good for washing utensils.
उत्तर
Reason:
Hard water damages the utensils and containers in which it is stored and forms a hard layer.
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संबंधित प्रश्न
What causes the temporary and permanent hardness of water?
Discuss the principle and method of softening of hard water by synthetic ion-exchange resins.
What do you understand by
Temporary hard water
What do you understand by
Permanent hard water
What are the causes for:
Temporary hardness
What are the causes for
Permanent hardness
Explain with equation, what is noticed when permanent hard water is treated with
Slaked time
Both temporary & permanent hardness in water can be removed by addition of washing soda. Give balanced equations for the same.
Soap lathers well in hard water.
Match the following.
| Universal solvent | Water pollutant |
| Hard water | Kills germs |
| Boiling | Ozonisation |
| Sterilization | Water |
| Sewage | Stomach ailments |
