Give two examples of hydrated substances.

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Removal of Hardness of Water

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अध्याय 8: Water - Exercise II [पृष्ठ ११५]

अध्याय 8 Water
Exercise II | Q 6.1 | पृष्ठ ११५

What do you observe when Washing soda is exposed to air ?

Name the compound responsible for permanent hardness of water.

What do you understand by

Hard water

What are the advantages of soft water.

Differentiate between Temporary & permanent hard water with suitable examples.

Give balanced equation to show how temporary hardness enters into water.

State the causes of hardness in water.

A sample of water is given in a trough. State how would you prove experimentally whether the given sample is hard water or soft water.

What is the reason for the hardness of water?

Temporary hardness of water can be removed by