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प्रश्न
Name or state the following:
A liquid hydroscopic substance.
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उत्तर
A liquid hygroscopic substance - concentrated sulphuric acid (cone. H2SO4)
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संबंधित प्रश्न
Define water of crystallization. Give two examples with formulae.
Water turns the colour of anhydrous copper sulphate .................
The sticky substance formed when soap is added to hard water is ______.
Give the names and formulae of two substances.
Hydrated substance
What are drying or desiccating agents? Give examples.
State the methods by which hydrated salts can be made anhydrous.
Differentiate the function of concentrated sulphuric acid as a drying agent & as a dehydrating agent. Is fused calcium chloride a dehydrating or a desiccating agent. Give reasons.
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 the following:
Deliquescent salt and hygroscopic salt
What happens when MgSO4.7H2O is heated? Write the appropriate equation?
