ICSE-WATER-EXERCISE 3(C)
- What is the composition of water? In what volume its elements combine ...
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- What is the use of solubility of oxygen and carbon dioxide in water?
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- Hot saturated solution of sodium nitrate forms crystals, as it cools. ...
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- What are hydrous substances ? Explain with examples.
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- Name the three methods by which hydrous substances can be made anhydro...
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- What is the importance of dissolved impurities in water?
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- State two ways, by which a saturated solution can be changed to unsatu...
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- What do you understand by Soft water
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- What do you understand by Hard water
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- What do you understand by Temporary Hard water
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- What do you understand by Permanent hard water.
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- What are the causes for Temporary hardness
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- What are the causes for Permanent hardness
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- What are the advantages of (i) soft water (ii) hard water?
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- What are stalagmites and stalactites? How are they formed ?
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- Name the substances which give water (i) temporary hardness (ii) perma...
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- Give equations to show what happens when temporary hard water is boi...
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- Give equations to show what happens when temporary hard water is tre...
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- State the disadvantages of using hard water.
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- What is a soap, what for is it used ?
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