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प्रश्न
Give one word for the following statement:
A property due to which a substance absorbs water without dissolving.
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उत्तर
A property due to which a substance absorbs water without dissolving hygroscopic.
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संबंधित प्रश्न
Give the names and formulae of two substances.
Hydrated substance
The substance that can remove hydrogen and oxygen atoms in the ratio of 2:1(in the form of water) from the compound.
State the methods by which hydrated salts can be made anhydrous.
Name three methods by which hydrous substances can be made anhydrous.
Match the substances in List I with the appropriate answer in List II.
| List I | List II |
| 1. Green vitriol | A: Permanent hardness in water |
| 2. Paint | B: Hygroscopic |
| 3. Magnesium chloride | C: Temporary hardness in water |
| 4. Magnesium bicarbonate | D: Heptahydrate |
| 5. Calcium oxide | E: Colloidal |
Differentiate between hydrated and anhydrous crystals with examples. State three defined changes that occur when hydrated copper sulphate is heated.
Select the correct word from the words in option to complete the sentence:
Efflorescence occurs when the vapour pressure of the hydrated crystals is ____ than the vapour pressure of the atmospheric humidity.
Select the correct answer from the choice given in the options.
An anhydrous crystal _____.
Define Hydrated salt.
What happens when MgSO4.7H2O is heated? Write the appropriate equation?
