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प्रश्न
What are drying or desiccating agents? Give examples.
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उत्तर
These are substances which can readily absorb moisture from other substances without chemically reacting with them.
Examples:
Phosphorous pentoxide (P2O5), quick lime (CaO)
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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 ______.
State the methods by which hydrated salts can be made anhydrous.
What are hydrous substances? Explain with examples.
Differentiate between an efflorescent, deliquescent & ‘ hygroscopic substance with suitable examples.
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 anhydrate of a heptahydrate salt _____.
Differentiate between the following:
Deliquescent salt and hygroscopic salt
Match the following
| 1. | Blue vitriol | CaSO4.2H2O |
| 2. | Gypsum | CaO |
| 3. | Deliquescence | CuSO4.5H2O |
| 4. | Hygroscopic | NaOH |
