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प्रश्न
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 |
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उत्तर
| List I | List II |
| 1. Green vitriol | D: Heptahydrate |
| 2. Paint | E: Colloidal |
| 3. Magnesium chloride | A: Permanent hardness in water |
| 4. Magnesium bicarbonate | C: Temporary hardness in water |
| 5. Calcium oxide | B: 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.
What are hydrous substances? Explain with examples.
Differentiate between ‘hydrated’ & ‘anhydrous’ crystals. Give the chemical formula of – the following hydrated crystals -
(a) Washing soda
(b) Gypsum
(c) Blue vitriol
(d) Epsom salt
(e) Glauber’s salt.
State which crystal from (a) to (e) is a pentahydrate.
Complete the statement by filling the blank with the correct word from the option.
Hygroscopic substance absorb moisture from the atmosphere & _______their original state.
Explain the following observation:
In the expression anhydrous copper sulphate, what is meant by “anhydrous”?
Select the correct answer from the choice given in the options.
An anhydrous crystal _____.
Name or state the following:
A liquid hydroscopic substance.
Differentiate between the following:
Deliquescent salt and hygroscopic salt
Define Hydrated salt.
