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प्रश्न
Name or state the following:
A liquid hydroscopic substance.
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उत्तर
A liquid hygroscopic substance - concentrated sulphuric acid (cone. H2SO4)
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संबंधित प्रश्न
What do you observe when Blue vitriol is heated?
Give one word for the following statement:
A substance which does not contain water .
Give one word for the following statement:
A property due to which a substance absorbs water without dissolving.
Complete the following table:
|
Common Name |
Chemical Name |
Formula |
Acid, base or salt |
Efflorescent, hygroscopic or deliquescent substance |
|
Solid caustic potash |
|
|
|
|
|
Quick lime |
|
|
|
|
|
Oil of vitriol |
|
|
|
|
|
Washing soda |
|
|
|
|
|
Solid caustic soda |
|
|
|
|
|
Blue vitriol |
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|
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.
Select the correct answer from the choice given in the options.
An anhydrate of a heptahydrate salt _____.
Define Hydrated salt.
A hot saturated solution of copper sulphate forms crystals as it cools. Why?
'A' is a blue coloured crystalline salt. On heating, it loses blue colour and to give 'B'. When water is added, 'B' gives back to 'A'. Identify A and B, write the equation.
What happens when MgSO4.7H2O is heated? Write the appropriate equation?
