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प्रश्न
Give one word for the following statement:
A substance which does not contain water .
उत्तर
A substance which does not contain water anhydrous substances.
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संबंधित प्रश्न
What do you observe when Blue vitriol is heated?
The sticky substance formed when soap is added to hard water is ______.
Give one word for the following statement:
A property due to which a substance absorbs water without dissolving.
What are drying or desiccating agents? Give examples.
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.
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.
Name or state the following:
A liquid hydroscopic substance.
Match the following
| 1. | Blue vitriol | CaSO4.2H2O |
| 2. | Gypsum | CaO |
| 3. | Deliquescence | CuSO4.5H2O |
| 4. | Hygroscopic | NaOH |
What happens when MgSO4.7H2O is heated? Write the appropriate equation?
