Advertisements
Advertisements
प्रश्न
Give the names and formulae of two substances
Anhydrous substance
Advertisements
उत्तर
Table salt: NaCl
Nitre: KNO3
APPEARS IN
संबंधित प्रश्न
Define water of crystallization. Give two examples with formulae.
Water turns the colour of anhydrous copper sulphate .................
Give one word for the following statement:
A substance which does not contain water .
Give the names and formulae of two substances.
Hydrated substance
State the methods by which hydrated salts can be made anhydrous.
What are hydrous substances? Explain with examples.
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 |
Explain the following observation:
Why is fused calcium chloride or cone, sulphuric acid used in a desiccator?
Select the correct answer from the choice given in the options.
An anhydrate of a heptahydrate salt _____.
What happens when MgSO4.7H2O is heated? Write the appropriate equation?
