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प्रश्न
Explain the following observation:
Why is fused calcium chloride or cone, sulphuric acid used in a desiccator?
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उत्तर
Anhydrous or fused calcium chloride is highly hygroscopic in nature it readily absorbs moisture, also it is deliquescent in nature and is therefore used as a drying agent in a desiccator.
Concentrated sulphuric acid being hygroscopic in nature absorbs moisture from the air and gets diluted and acts as a drying agent as well as a dehydrating agent and hence is used in a desiccator.
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संबंधित प्रश्न
Water turns the colour of anhydrous copper sulphate .................
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Give one word for the following statement:
A substance which does not contain water .
The substance that can remove hydrogen and oxygen atoms in the ratio of 2:1(in the form of water) from the compound.
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Efflorescence occurs when the vapour pressure of the hydrated crystals is ____ than the vapour pressure of the atmospheric humidity.
Select the correct answer from the choice given in the options.
An anhydrous crystal _____.
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 |
The molecular formula of green vitriol is MgSO4.7H2O.
What happens when MgSO4.7H2O is heated? Write the appropriate equation?
